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-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:52:06,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:52:06,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:52:06,917 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:52:06,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:52:06,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:52:06,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:52:06,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:52:06,922 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:52:06,922 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:52:06,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:52:06,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:52:06,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:52:06,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:52:06,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:52:06,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:52:06,932 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:52:06,933 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:52:06,933 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:52:06,934 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:52:06,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:52:06,935 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:52:06,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:52:06,935 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:52:06,936 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:52:06,936 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:52:06,936 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:52:06,937 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:52:06,937 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:52:06,939 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:52:06,940 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:52:06,940 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 09:52:06,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:52:06,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:52:06,948 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:52:06,948 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:52:06,948 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:52:06,948 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:52:06,948 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:52:06,948 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:52:06,949 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:52:06,949 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:52:06,950 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:52:06,950 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:52:06,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:52:06,953 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:52:06,954 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:52:06,954 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:52:06,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:52:06,986 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:52:06,990 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:52:06,991 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:52:06,991 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:52:06,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20_true-unreach-call.i [2018-01-31 09:52:07,062 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:52:07,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 09:52:07,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:52:07,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:52:07,069 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:52:07,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fbc201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07, skipping insertion in model container [2018-01-31 09:52:07,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,081 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:52:07,090 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:52:07,159 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:52:07,172 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:52:07,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07 WrapperNode [2018-01-31 09:52:07,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:52:07,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:52:07,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:52:07,176 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:52:07,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:52:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:52:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:52:07,196 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:52:07,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (1/1) ... No working directory specified, using /home/daniel/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 09:52:07,234 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:52:07,235 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:52:07,235 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-31 09:52:07,235 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:52:07,235 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:52:07,236 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:52:07,559 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:52:07,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:07 BoogieIcfgContainer [2018-01-31 09:52:07,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:52:07,559 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 09:52:07,559 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 09:52:07,560 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 09:52:07,562 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:07" (1/1) ... [2018-01-31 09:52:07,566 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 09:52:07,567 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 09:52:07,567 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 09:52:07,591 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 09:52:07,608 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 09:52:07,640 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 09:53:41,006 INFO L314 AbstractInterpreter]: Visited 91 different actions 690 times. Merged at 63 different actions 327 times. Widened at 1 different actions 1 times. Found 48 fixpoints after 13 different actions. Largest state had 68 variables. [2018-01-31 09:53:41,008 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 09:53:41,014 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 10 [2018-01-31 09:53:41,015 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 09:53:41,015 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 09:53:41,015 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_11| |v_main_~#x~5.base_7|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29'''''')) ((select (select |v_#memory_int_1| v_avg_~x.base_2) (+ v_avg_~x.offset_2 (* 4 v_avg_~i~3_5))), at (SUMMARY for call #t~mem1 := read~int(~x.base, ~x.offset + ~i~3 * 4, 4); srcloc: L10)) ((select (select |v_#memory_int_12| |v_main_~#x~5.base_9|) |v_main_~#x~5.offset_9|), at (SUMMARY for call #t~mem11 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L31)) ((select (select |v_#memory_int_13| |v_main_~#x~5.base_10|) (+ (* 4 v_main_~i~7_4) |v_main_~#x~5.offset_10| 4)), at (SUMMARY for call #t~mem14 := read~int(~#x~5.base, ~#x~5.offset + (~i~7 + 1) * 4, 4); srcloc: L33)) ((select (select |v_#memory_int_7| |v_main_~#x~5.base_5|) (+ |v_main_~#x~5.offset_5| 4)), at (SUMMARY for call #t~mem8 := read~int(~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29''')) ((select |v_#memory_int_15| |v_main_~#x~5.base_11|), at (SUMMARY for call write~int(#t~mem14, ~#x~5.base, ~#x~5.offset + ~i~7 * 4, 4); srcloc: L33')) ((select |v_#memory_int_9| |v_main_~#x~5.base_6|), at (SUMMARY for call write~int(#t~mem8, ~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29'''')) ((select |v_#memory_int_17| |v_main_~#x~5.base_12|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 76, 4); srcloc: L32''''''')) ((select |v_#memory_int_5| |v_main_~#x~5.base_2|), at (SUMMARY for call write~int(#t~nondet3, ~#x~5.base, ~#x~5.offset + ~i~6 * 4, 4); srcloc: L24')) ((select (select |v_#memory_int_6| |v_main_~#x~5.base_4|) |v_main_~#x~5.offset_4|), at (SUMMARY for call #t~mem6 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29)) [2018-01-31 09:53:41,034 INFO L547 PartitionManager]: partitioning result: [2018-01-31 09:53:41,034 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 09:53:41,034 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 09:53:41,034 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 09:53:41,034 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:53:41,034 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 09:53:41,035 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 09:53:41,035 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:53:41,035 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 09:53:41,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:53:41 BasicIcfg [2018-01-31 09:53:41,045 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 09:53:41,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:53:41,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:53:41,048 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:53:41,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:52:07" (1/4) ... [2018-01-31 09:53:41,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c174fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:53:41, skipping insertion in model container [2018-01-31 09:53:41,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:07" (2/4) ... [2018-01-31 09:53:41,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c174fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:53:41, skipping insertion in model container [2018-01-31 09:53:41,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:07" (3/4) ... [2018-01-31 09:53:41,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c174fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:53:41, skipping insertion in model container [2018-01-31 09:53:41,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:53:41" (4/4) ... [2018-01-31 09:53:41,050 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 09:53:41,056 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:53:41,061 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:53:41,081 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:53:41,081 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:53:41,081 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:53:41,081 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:53:41,081 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:53:41,082 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:53:41,082 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:53:41,082 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:53:41,082 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:53:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 09:53:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 09:53:41,094 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:41,095 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] [2018-01-31 09:53:41,095 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:53:41,097 INFO L82 PathProgramCache]: Analyzing trace with hash 119124891, now seen corresponding path program 1 times [2018-01-31 09:53:41,098 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:41,098 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:41,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,128 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:41,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:41,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:41,181 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 09:53:41,182 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:53:41,183 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:53:41,184 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:53:41,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:53:41,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:53:41,191 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 09:53:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:41,208 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2018-01-31 09:53:41,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:53:41,209 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-31 09:53:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:41,216 INFO L225 Difference]: With dead ends: 136 [2018-01-31 09:53:41,216 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 09:53:41,219 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:53:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 09:53:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 09:53:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 09:53:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2018-01-31 09:53:41,246 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2018-01-31 09:53:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:41,246 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2018-01-31 09:53:41,246 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:53:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2018-01-31 09:53:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-31 09:53:41,250 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:41,250 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, 1] [2018-01-31 09:53:41,250 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:53:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash 320115213, now seen corresponding path program 1 times [2018-01-31 09:53:41,250 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:41,251 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:41,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,251 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:41,251 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:41,262 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:41,315 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 09:53:41,315 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:53:41,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:53:41,316 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:53:41,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:53:41,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:53:41,317 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 3 states. [2018-01-31 09:53:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:41,370 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2018-01-31 09:53:41,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:53:41,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-01-31 09:53:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:41,371 INFO L225 Difference]: With dead ends: 129 [2018-01-31 09:53:41,371 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 09:53:41,372 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 09:53:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 09:53:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 09:53:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 09:53:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2018-01-31 09:53:41,377 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 38 [2018-01-31 09:53:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:41,377 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2018-01-31 09:53:41,377 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:53:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2018-01-31 09:53:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 09:53:41,379 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:41,379 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:41,379 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:53:41,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1650744741, now seen corresponding path program 1 times [2018-01-31 09:53:41,379 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:41,379 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:41,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,380 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:41,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:41,389 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:53:41,474 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:41,474 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 09:53:41,488 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:41,521 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-31 09:53:41,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:53:41,582 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:53:41,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:53:41,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:53:41,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:53:41,582 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 6 states. [2018-01-31 09:53:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:41,782 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2018-01-31 09:53:41,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:53:41,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-01-31 09:53:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:41,783 INFO L225 Difference]: With dead ends: 144 [2018-01-31 09:53:41,783 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 09:53:41,784 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:53:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 09:53:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 09:53:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:53:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2018-01-31 09:53:41,788 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 46 [2018-01-31 09:53:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:41,788 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2018-01-31 09:53:41,788 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:53:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2018-01-31 09:53:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-31 09:53:41,789 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:41,789 INFO L351 BasicCegarLoop]: trace histogram [3, 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, 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 09:53:41,789 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:53:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -621479573, now seen corresponding path program 1 times [2018-01-31 09:53:41,790 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:41,790 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:41,790 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,790 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:41,790 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:41,800 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-31 09:53:41,862 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:41,862 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 09:53:41,877 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:41,895 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-31 09:53:41,993 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:41,993 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:53:41,993 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:53:41,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:53:41,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:53:41,994 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 10 states. [2018-01-31 09:53:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:42,333 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2018-01-31 09:53:42,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:53:42,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-01-31 09:53:42,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:42,334 INFO L225 Difference]: With dead ends: 162 [2018-01-31 09:53:42,334 INFO L226 Difference]: Without dead ends: 109 [2018-01-31 09:53:42,335 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:53:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-01-31 09:53:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-01-31 09:53:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-31 09:53:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2018-01-31 09:53:42,339 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 62 [2018-01-31 09:53:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:42,339 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2018-01-31 09:53:42,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:53:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2018-01-31 09:53:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 09:53:42,340 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:42,340 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:53:42,340 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:53:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1813102799, now seen corresponding path program 2 times [2018-01-31 09:53:42,340 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:42,340 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:42,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:42,341 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:42,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:42,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 09:53:42,458 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:42,458 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:42,462 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:53:42,471 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:42,487 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:42,490 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:42,492 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-31 09:53:42,667 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:42,667 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 09:53:42,667 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 09:53:42,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 09:53:42,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:53:42,668 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 14 states. [2018-01-31 09:53:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:42,955 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2018-01-31 09:53:42,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 09:53:42,956 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-01-31 09:53:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:42,957 INFO L225 Difference]: With dead ends: 186 [2018-01-31 09:53:42,957 INFO L226 Difference]: Without dead ends: 125 [2018-01-31 09:53:42,957 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:53:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-31 09:53:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2018-01-31 09:53:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-31 09:53:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2018-01-31 09:53:42,972 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 78 [2018-01-31 09:53:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:42,972 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2018-01-31 09:53:42,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 09:53:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2018-01-31 09:53:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-31 09:53:42,973 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:42,973 INFO L351 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 09:53:42,974 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:53:42,978 INFO L82 PathProgramCache]: Analyzing trace with hash -244961545, now seen corresponding path program 3 times [2018-01-31 09:53:42,978 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:42,978 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:42,978 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:42,978 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:42,978 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:42,991 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 09:53:43,117 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:43,117 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:43,121 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:53:43,129 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:43,132 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:43,135 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:43,144 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:43,144 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:43,146 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:53:43,240 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:43,240 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-31 09:53:43,240 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 09:53:43,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 09:53:43,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-31 09:53:43,241 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand 18 states. [2018-01-31 09:53:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:43,497 INFO L93 Difference]: Finished difference Result 210 states and 226 transitions. [2018-01-31 09:53:43,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 09:53:43,497 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-01-31 09:53:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:43,498 INFO L225 Difference]: With dead ends: 210 [2018-01-31 09:53:43,498 INFO L226 Difference]: Without dead ends: 141 [2018-01-31 09:53:43,498 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2018-01-31 09:53:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-01-31 09:53:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2018-01-31 09:53:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-31 09:53:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2018-01-31 09:53:43,502 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 94 [2018-01-31 09:53:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:43,502 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2018-01-31 09:53:43,503 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 09:53:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2018-01-31 09:53:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-31 09:53:43,503 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:43,504 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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 09:53:43,504 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:53:43,504 INFO L82 PathProgramCache]: Analyzing trace with hash 561170621, now seen corresponding path program 4 times [2018-01-31 09:53:43,504 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:43,504 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:43,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:43,504 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:43,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:43,516 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:53:43,641 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:43,641 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:43,648 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:53:43,684 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:43,686 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:53:43,914 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:43,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 09:53:43,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:53:43,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:53:43,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:53:43,915 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 15 states. [2018-01-31 09:53:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:44,043 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-31 09:53:44,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:53:44,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2018-01-31 09:53:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:44,046 INFO L225 Difference]: With dead ends: 221 [2018-01-31 09:53:44,046 INFO L226 Difference]: Without dead ends: 144 [2018-01-31 09:53:44,046 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:53:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-31 09:53:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2018-01-31 09:53:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-31 09:53:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2018-01-31 09:53:44,050 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 110 [2018-01-31 09:53:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:44,050 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2018-01-31 09:53:44,050 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:53:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2018-01-31 09:53:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-31 09:53:44,051 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:44,052 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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 09:53:44,052 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:53:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1493220437, now seen corresponding path program 5 times [2018-01-31 09:53:44,052 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:44,052 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:44,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:44,053 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:44,053 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:44,070 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:53:44,203 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:44,203 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:44,210 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:53:44,224 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,238 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,241 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,248 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,264 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,282 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:44,283 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:44,285 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:53:44,410 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:44,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 09:53:44,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:53:44,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:53:44,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:53:44,412 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 24 states. [2018-01-31 09:53:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:44,760 INFO L93 Difference]: Finished difference Result 242 states and 258 transitions. [2018-01-31 09:53:44,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:53:44,764 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2018-01-31 09:53:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:44,765 INFO L225 Difference]: With dead ends: 242 [2018-01-31 09:53:44,765 INFO L226 Difference]: Without dead ends: 165 [2018-01-31 09:53:44,766 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 09:53:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-31 09:53:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2018-01-31 09:53:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-31 09:53:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2018-01-31 09:53:44,773 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 118 [2018-01-31 09:53:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:44,773 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2018-01-31 09:53:44,773 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:53:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2018-01-31 09:53:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-31 09:53:44,774 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:44,774 INFO L351 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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 09:53:44,774 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:53:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1135751141, now seen corresponding path program 6 times [2018-01-31 09:53:44,774 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:44,774 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:44,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:44,775 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:44,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:44,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-01-31 09:53:44,935 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:44,935 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:44,955 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:53:44,963 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,965 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,968 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,970 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,975 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,983 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,992 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:44,999 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:45,000 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:45,001 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:45,176 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:45,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2018-01-31 09:53:45,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 09:53:45,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 09:53:45,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-31 09:53:45,177 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 28 states. [2018-01-31 09:53:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:45,745 INFO L93 Difference]: Finished difference Result 266 states and 282 transitions. [2018-01-31 09:53:45,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:53:45,746 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-31 09:53:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:45,747 INFO L225 Difference]: With dead ends: 266 [2018-01-31 09:53:45,747 INFO L226 Difference]: Without dead ends: 181 [2018-01-31 09:53:45,748 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=495, Invalid=2157, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:53:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-31 09:53:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2018-01-31 09:53:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-31 09:53:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 179 transitions. [2018-01-31 09:53:45,760 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 179 transitions. Word has length 134 [2018-01-31 09:53:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:45,761 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 179 transitions. [2018-01-31 09:53:45,761 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 09:53:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 179 transitions. [2018-01-31 09:53:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-31 09:53:45,762 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:45,762 INFO L351 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 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 09:53:45,762 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:53:45,762 INFO L82 PathProgramCache]: Analyzing trace with hash -423916063, now seen corresponding path program 7 times [2018-01-31 09:53:45,762 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:45,762 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:45,762 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:45,762 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:45,763 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:45,801 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:53:46,004 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:46,004 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:46,010 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:46,028 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:53:46,069 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:46,070 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:53:46,070 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:53:46,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:53:46,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:53:46,070 INFO L87 Difference]: Start difference. First operand 171 states and 179 transitions. Second operand 21 states. [2018-01-31 09:53:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:46,322 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2018-01-31 09:53:46,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:53:46,325 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2018-01-31 09:53:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:46,325 INFO L225 Difference]: With dead ends: 277 [2018-01-31 09:53:46,325 INFO L226 Difference]: Without dead ends: 184 [2018-01-31 09:53:46,326 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:53:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-31 09:53:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2018-01-31 09:53:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 09:53:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2018-01-31 09:53:46,329 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 150 [2018-01-31 09:53:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:46,329 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2018-01-31 09:53:46,329 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:53:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2018-01-31 09:53:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-31 09:53:46,330 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:46,330 INFO L351 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 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 09:53:46,330 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:53:46,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1429473657, now seen corresponding path program 8 times [2018-01-31 09:53:46,330 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:46,330 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:46,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:46,331 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:46,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:46,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:53:46,526 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:46,526 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:46,531 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:53:46,539 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:46,553 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:46,554 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:46,556 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:53:46,598 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:46,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 09:53:46,599 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 09:53:46,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 09:53:46,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:53:46,599 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 23 states. [2018-01-31 09:53:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:46,815 INFO L93 Difference]: Finished difference Result 285 states and 300 transitions. [2018-01-31 09:53:46,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 09:53:46,816 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2018-01-31 09:53:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:46,816 INFO L225 Difference]: With dead ends: 285 [2018-01-31 09:53:46,816 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 09:53:46,817 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 09:53:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 09:53:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 09:53:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 09:53:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 195 transitions. [2018-01-31 09:53:46,819 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 195 transitions. Word has length 158 [2018-01-31 09:53:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:46,820 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 195 transitions. [2018-01-31 09:53:46,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 09:53:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 195 transitions. [2018-01-31 09:53:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-31 09:53:46,821 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:46,821 INFO L351 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 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 09:53:46,821 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:53:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1247580911, now seen corresponding path program 9 times [2018-01-31 09:53:46,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:46,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:46,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:46,821 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:46,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:46,830 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:53:47,051 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:47,051 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:47,056 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:53:47,064 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,067 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,070 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,083 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,096 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,139 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,268 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:47,269 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:47,271 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:53:47,523 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:47,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2018-01-31 09:53:47,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:53:47,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:53:47,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:53:47,524 INFO L87 Difference]: Start difference. First operand 187 states and 195 transitions. Second operand 36 states. [2018-01-31 09:53:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:48,284 INFO L93 Difference]: Finished difference Result 306 states and 322 transitions. [2018-01-31 09:53:48,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:53:48,284 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2018-01-31 09:53:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:48,285 INFO L225 Difference]: With dead ends: 306 [2018-01-31 09:53:48,285 INFO L226 Difference]: Without dead ends: 213 [2018-01-31 09:53:48,286 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=845, Invalid=3711, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:53:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-01-31 09:53:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2018-01-31 09:53:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-31 09:53:48,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2018-01-31 09:53:48,289 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 166 [2018-01-31 09:53:48,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:48,289 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2018-01-31 09:53:48,289 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:53:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2018-01-31 09:53:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-31 09:53:48,290 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:48,291 INFO L351 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 8, 7, 7, 7, 7, 7, 7, 7, 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 09:53:48,291 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:53:48,291 INFO L82 PathProgramCache]: Analyzing trace with hash -578587433, now seen corresponding path program 10 times [2018-01-31 09:53:48,291 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:48,291 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:48,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:48,291 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:48,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:48,300 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:48,566 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:48,566 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:48,572 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:53:48,659 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:48,661 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:48,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:48,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 09:53:48,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 09:53:48,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 09:53:48,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:53:48,712 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 27 states. [2018-01-31 09:53:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:49,122 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2018-01-31 09:53:49,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 09:53:49,134 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2018-01-31 09:53:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:49,135 INFO L225 Difference]: With dead ends: 317 [2018-01-31 09:53:49,135 INFO L226 Difference]: Without dead ends: 216 [2018-01-31 09:53:49,135 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 09:53:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-31 09:53:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2018-01-31 09:53:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-31 09:53:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 219 transitions. [2018-01-31 09:53:49,140 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 219 transitions. Word has length 182 [2018-01-31 09:53:49,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:49,140 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 219 transitions. [2018-01-31 09:53:49,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 09:53:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 219 transitions. [2018-01-31 09:53:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-31 09:53:49,141 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:49,141 INFO L351 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 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 09:53:49,141 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:53:49,141 INFO L82 PathProgramCache]: Analyzing trace with hash -882405265, now seen corresponding path program 11 times [2018-01-31 09:53:49,141 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:49,141 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:49,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:49,142 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:49,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:49,166 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:49,447 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:49,447 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:49,472 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:53:49,479 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,491 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,493 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,495 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,497 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,499 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,505 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,509 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,551 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,575 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,624 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:49,628 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:49,630 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:49,706 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:49,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 09:53:49,706 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 09:53:49,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 09:53:49,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:53:49,706 INFO L87 Difference]: Start difference. First operand 211 states and 219 transitions. Second operand 29 states. [2018-01-31 09:53:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:50,218 INFO L93 Difference]: Finished difference Result 325 states and 340 transitions. [2018-01-31 09:53:50,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 09:53:50,220 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-01-31 09:53:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:50,221 INFO L225 Difference]: With dead ends: 325 [2018-01-31 09:53:50,221 INFO L226 Difference]: Without dead ends: 224 [2018-01-31 09:53:50,222 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 09:53:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-31 09:53:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2018-01-31 09:53:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 09:53:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2018-01-31 09:53:50,225 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 190 [2018-01-31 09:53:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:50,225 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2018-01-31 09:53:50,225 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 09:53:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2018-01-31 09:53:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-31 09:53:50,226 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:50,226 INFO L351 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 8, 7, 7, 7, 7, 7, 7, 7, 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 09:53:50,226 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:53:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash -710765561, now seen corresponding path program 12 times [2018-01-31 09:53:50,226 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:50,226 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:50,227 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:50,227 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:50,227 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:50,235 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:50,844 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:50,844 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:50,849 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:53:50,858 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:50,860 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:50,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:50,866 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:50,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:50,901 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:50,920 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:51,041 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:51,092 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:51,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:51,350 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:51,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:51,967 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:52,169 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:53:52,170 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:52,174 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:52,260 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:52,260 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:53:52,261 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:53:52,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:53:52,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:53:52,261 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand 31 states. [2018-01-31 09:53:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:52,802 INFO L93 Difference]: Finished difference Result 333 states and 348 transitions. [2018-01-31 09:53:52,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:53:52,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-31 09:53:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:52,803 INFO L225 Difference]: With dead ends: 333 [2018-01-31 09:53:52,803 INFO L226 Difference]: Without dead ends: 232 [2018-01-31 09:53:52,804 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:53:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-31 09:53:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2018-01-31 09:53:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-31 09:53:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2018-01-31 09:53:52,807 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 198 [2018-01-31 09:53:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:52,809 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2018-01-31 09:53:52,809 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:53:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2018-01-31 09:53:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-31 09:53:52,809 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:52,809 INFO L351 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 8, 7, 7, 7, 7, 7, 7, 7, 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 09:53:52,809 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:53:52,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1254915999, now seen corresponding path program 13 times [2018-01-31 09:53:52,810 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:52,810 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:52,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:52,810 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:52,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:52,820 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:53,534 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:53,534 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:53,539 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:53,561 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:53,613 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:53,614 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:53:53,614 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:53:53,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:53:53,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:53:53,614 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 33 states. [2018-01-31 09:53:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:53,998 INFO L93 Difference]: Finished difference Result 341 states and 356 transitions. [2018-01-31 09:53:53,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:53:53,998 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2018-01-31 09:53:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:53,998 INFO L225 Difference]: With dead ends: 341 [2018-01-31 09:53:53,998 INFO L226 Difference]: Without dead ends: 240 [2018-01-31 09:53:53,999 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:53:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-31 09:53:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2018-01-31 09:53:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 09:53:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 243 transitions. [2018-01-31 09:53:54,002 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 243 transitions. Word has length 206 [2018-01-31 09:53:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:54,002 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 243 transitions. [2018-01-31 09:53:54,002 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:53:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 243 transitions. [2018-01-31 09:53:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-31 09:53:54,003 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:54,003 INFO L351 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 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 09:53:54,003 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:53:54,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1635603255, now seen corresponding path program 14 times [2018-01-31 09:53:54,003 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:54,003 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:54,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:54,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:53:54,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:54,012 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:54,922 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:54,922 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:54,926 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:53:54,935 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:54,951 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:54,953 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:54,956 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:55,016 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:55,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 09:53:55,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 09:53:55,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 09:53:55,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:53:55,017 INFO L87 Difference]: Start difference. First operand 235 states and 243 transitions. Second operand 35 states. [2018-01-31 09:53:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:55,641 INFO L93 Difference]: Finished difference Result 349 states and 364 transitions. [2018-01-31 09:53:55,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 09:53:55,642 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 214 [2018-01-31 09:53:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:55,643 INFO L225 Difference]: With dead ends: 349 [2018-01-31 09:53:55,643 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 09:53:55,644 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 09:53:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 09:53:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 09:53:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 09:53:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 251 transitions. [2018-01-31 09:53:55,647 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 251 transitions. Word has length 214 [2018-01-31 09:53:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:55,647 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 251 transitions. [2018-01-31 09:53:55,647 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 09:53:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 251 transitions. [2018-01-31 09:53:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-31 09:53:55,648 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:55,648 INFO L351 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 8, 7, 7, 7, 7, 7, 7, 7, 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 09:53:55,648 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:53:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash 944574159, now seen corresponding path program 15 times [2018-01-31 09:53:55,648 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:55,648 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:55,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:55,649 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:55,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:55,658 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:53:56,212 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:56,212 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:56,216 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:53:56,226 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,229 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,236 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,304 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,356 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,504 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:53:56,505 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:56,507 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-01-31 09:53:56,801 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:56,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2018-01-31 09:53:56,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 09:53:56,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 09:53:56,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 09:53:56,802 INFO L87 Difference]: Start difference. First operand 243 states and 251 transitions. Second operand 50 states. [2018-01-31 09:53:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:57,880 INFO L93 Difference]: Finished difference Result 370 states and 386 transitions. [2018-01-31 09:53:57,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 09:53:57,880 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 222 [2018-01-31 09:53:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:57,881 INFO L225 Difference]: With dead ends: 370 [2018-01-31 09:53:57,881 INFO L226 Difference]: Without dead ends: 269 [2018-01-31 09:53:57,883 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:53:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-31 09:53:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 259. [2018-01-31 09:53:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-31 09:53:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 267 transitions. [2018-01-31 09:53:57,887 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 267 transitions. Word has length 222 [2018-01-31 09:53:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:57,888 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 267 transitions. [2018-01-31 09:53:57,888 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 09:53:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 267 transitions. [2018-01-31 09:53:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-31 09:53:57,888 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:57,889 INFO L351 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:53:57,889 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:53:57,889 INFO L82 PathProgramCache]: Analyzing trace with hash -696856427, now seen corresponding path program 16 times [2018-01-31 09:53:57,889 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:57,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:57,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:57,889 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:57,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:57,902 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:53:58,378 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:58,378 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:58,384 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:53:58,504 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:53:58,506 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:53:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:53:58,597 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:53:58,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 09:53:58,598 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 09:53:58,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 09:53:58,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:53:58,599 INFO L87 Difference]: Start difference. First operand 259 states and 267 transitions. Second operand 39 states. [2018-01-31 09:53:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:53:59,132 INFO L93 Difference]: Finished difference Result 381 states and 396 transitions. [2018-01-31 09:53:59,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 09:53:59,133 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 238 [2018-01-31 09:53:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:53:59,133 INFO L225 Difference]: With dead ends: 381 [2018-01-31 09:53:59,134 INFO L226 Difference]: Without dead ends: 272 [2018-01-31 09:53:59,135 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 09:53:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-31 09:53:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2018-01-31 09:53:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-31 09:53:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 275 transitions. [2018-01-31 09:53:59,138 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 275 transitions. Word has length 238 [2018-01-31 09:53:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:53:59,138 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 275 transitions. [2018-01-31 09:53:59,138 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 09:53:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 275 transitions. [2018-01-31 09:53:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-31 09:53:59,139 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:53:59,139 INFO L351 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 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 09:53:59,139 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:53:59,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1254931411, now seen corresponding path program 17 times [2018-01-31 09:53:59,139 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:53:59,139 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:53:59,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:59,140 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:53:59,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:53:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:53:59,148 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:53:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:53:59,852 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:53:59,852 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:53:59,857 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:53:59,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,879 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,889 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,891 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,909 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,917 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:53:59,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:00,065 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:00,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:00,624 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:00,724 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:01,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:01,847 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:01,852 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-01-31 09:54:02,235 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:02,235 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 56 [2018-01-31 09:54:02,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-31 09:54:02,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-31 09:54:02,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 09:54:02,236 INFO L87 Difference]: Start difference. First operand 267 states and 275 transitions. Second operand 56 states. [2018-01-31 09:54:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:03,582 INFO L93 Difference]: Finished difference Result 402 states and 418 transitions. [2018-01-31 09:54:03,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 09:54:03,582 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 246 [2018-01-31 09:54:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:03,583 INFO L225 Difference]: With dead ends: 402 [2018-01-31 09:54:03,583 INFO L226 Difference]: Without dead ends: 293 [2018-01-31 09:54:03,584 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2205, Invalid=9351, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 09:54:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-01-31 09:54:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 283. [2018-01-31 09:54:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-31 09:54:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 291 transitions. [2018-01-31 09:54:03,587 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 291 transitions. Word has length 246 [2018-01-31 09:54:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:03,587 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 291 transitions. [2018-01-31 09:54:03,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-31 09:54:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 291 transitions. [2018-01-31 09:54:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-31 09:54:03,588 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:03,588 INFO L351 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 10, 9, 9, 9, 9, 9, 9, 9, 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 09:54:03,588 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:54:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1895137267, now seen corresponding path program 18 times [2018-01-31 09:54:03,589 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:03,589 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:03,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:03,589 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:03,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:03,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-01-31 09:54:04,300 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:04,300 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:04,304 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:54:04,314 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,316 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,318 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,323 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,328 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,356 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,370 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,387 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,447 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,500 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,544 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,602 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,694 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:04,728 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:05,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:05,394 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:05,855 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:06,519 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:06,521 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:06,525 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-01-31 09:54:07,815 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:07,815 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21] total 60 [2018-01-31 09:54:07,816 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-31 09:54:07,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-31 09:54:07,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2018-01-31 09:54:07,816 INFO L87 Difference]: Start difference. First operand 283 states and 291 transitions. Second operand 60 states. [2018-01-31 09:54:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:09,253 INFO L93 Difference]: Finished difference Result 421 states and 437 transitions. [2018-01-31 09:54:09,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 09:54:09,254 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 262 [2018-01-31 09:54:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:09,255 INFO L225 Difference]: With dead ends: 421 [2018-01-31 09:54:09,255 INFO L226 Difference]: Without dead ends: 304 [2018-01-31 09:54:09,256 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2495, Invalid=10845, Unknown=0, NotChecked=0, Total=13340 [2018-01-31 09:54:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-31 09:54:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2018-01-31 09:54:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-01-31 09:54:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 307 transitions. [2018-01-31 09:54:09,259 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 307 transitions. Word has length 262 [2018-01-31 09:54:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:09,259 INFO L432 AbstractCegarLoop]: Abstraction has 299 states and 307 transitions. [2018-01-31 09:54:09,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-31 09:54:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 307 transitions. [2018-01-31 09:54:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-01-31 09:54:09,260 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:09,260 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 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 09:54:09,260 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:54:09,260 INFO L82 PathProgramCache]: Analyzing trace with hash 858809785, now seen corresponding path program 19 times [2018-01-31 09:54:09,261 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:09,261 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:09,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:09,261 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:09,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:09,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:09,613 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:09,613 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:09,618 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:54:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:09,647 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:09,731 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:09,732 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 09:54:09,732 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 09:54:09,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 09:54:09,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:54:09,732 INFO L87 Difference]: Start difference. First operand 299 states and 307 transitions. Second operand 25 states. [2018-01-31 09:54:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:09,972 INFO L93 Difference]: Finished difference Result 336 states and 346 transitions. [2018-01-31 09:54:09,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 09:54:09,972 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 278 [2018-01-31 09:54:09,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:09,973 INFO L225 Difference]: With dead ends: 336 [2018-01-31 09:54:09,973 INFO L226 Difference]: Without dead ends: 312 [2018-01-31 09:54:09,974 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:54:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-31 09:54:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2018-01-31 09:54:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-31 09:54:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 315 transitions. [2018-01-31 09:54:09,977 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 315 transitions. Word has length 278 [2018-01-31 09:54:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:09,977 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 315 transitions. [2018-01-31 09:54:09,977 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 09:54:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 315 transitions. [2018-01-31 09:54:09,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-31 09:54:09,978 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:09,978 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 12, 11, 11, 11, 11, 11, 11, 11, 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 09:54:09,978 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:54:09,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1868304871, now seen corresponding path program 20 times [2018-01-31 09:54:09,979 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:09,979 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:09,979 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:09,979 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:54:09,979 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:09,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:10,685 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:10,685 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:10,690 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:54:10,701 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:10,725 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:10,731 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:10,733 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:10,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:10,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 09:54:10,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 09:54:10,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 09:54:10,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:54:10,940 INFO L87 Difference]: Start difference. First operand 307 states and 315 transitions. Second operand 27 states. [2018-01-31 09:54:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:11,221 INFO L93 Difference]: Finished difference Result 344 states and 354 transitions. [2018-01-31 09:54:11,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 09:54:11,221 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 286 [2018-01-31 09:54:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:11,222 INFO L225 Difference]: With dead ends: 344 [2018-01-31 09:54:11,222 INFO L226 Difference]: Without dead ends: 320 [2018-01-31 09:54:11,223 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 09:54:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-31 09:54:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2018-01-31 09:54:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-01-31 09:54:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 323 transitions. [2018-01-31 09:54:11,226 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 323 transitions. Word has length 286 [2018-01-31 09:54:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:11,226 INFO L432 AbstractCegarLoop]: Abstraction has 315 states and 323 transitions. [2018-01-31 09:54:11,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 09:54:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 323 transitions. [2018-01-31 09:54:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-31 09:54:11,227 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:11,227 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 13, 12, 12, 12, 12, 12, 12, 12, 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 09:54:11,227 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:54:11,227 INFO L82 PathProgramCache]: Analyzing trace with hash -278417387, now seen corresponding path program 21 times [2018-01-31 09:54:11,227 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:11,227 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:11,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:11,228 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:11,228 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:11,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:11,608 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:11,609 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:11,613 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:54:11,624 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,635 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,642 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,655 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,668 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,687 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,709 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,729 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,782 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:11,887 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:12,059 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:12,154 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:12,381 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:12,382 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:12,385 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:12,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:12,463 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 09:54:12,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 09:54:12,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 09:54:12,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:54:12,464 INFO L87 Difference]: Start difference. First operand 315 states and 323 transitions. Second operand 29 states. [2018-01-31 09:54:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:12,909 INFO L93 Difference]: Finished difference Result 352 states and 362 transitions. [2018-01-31 09:54:12,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 09:54:12,909 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 294 [2018-01-31 09:54:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:12,910 INFO L225 Difference]: With dead ends: 352 [2018-01-31 09:54:12,910 INFO L226 Difference]: Without dead ends: 328 [2018-01-31 09:54:12,910 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 09:54:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-31 09:54:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 323. [2018-01-31 09:54:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-01-31 09:54:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 331 transitions. [2018-01-31 09:54:12,913 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 331 transitions. Word has length 294 [2018-01-31 09:54:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:12,914 INFO L432 AbstractCegarLoop]: Abstraction has 323 states and 331 transitions. [2018-01-31 09:54:12,914 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 09:54:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 331 transitions. [2018-01-31 09:54:12,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-01-31 09:54:12,915 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:12,915 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 14, 13, 13, 13, 13, 13, 13, 13, 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 09:54:12,915 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 09:54:12,915 INFO L82 PathProgramCache]: Analyzing trace with hash 356597827, now seen corresponding path program 22 times [2018-01-31 09:54:12,915 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:12,915 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:12,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:12,916 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:12,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:12,926 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:13,938 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:13,938 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:13,947 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:54:14,356 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:14,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:14,447 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:14,448 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:54:14,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:54:14,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:54:14,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:54:14,448 INFO L87 Difference]: Start difference. First operand 323 states and 331 transitions. Second operand 31 states. [2018-01-31 09:54:14,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:14,827 INFO L93 Difference]: Finished difference Result 360 states and 370 transitions. [2018-01-31 09:54:14,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:54:14,827 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 302 [2018-01-31 09:54:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:14,828 INFO L225 Difference]: With dead ends: 360 [2018-01-31 09:54:14,828 INFO L226 Difference]: Without dead ends: 336 [2018-01-31 09:54:14,829 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:54:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-31 09:54:14,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2018-01-31 09:54:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 09:54:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 339 transitions. [2018-01-31 09:54:14,832 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 339 transitions. Word has length 302 [2018-01-31 09:54:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:14,832 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 339 transitions. [2018-01-31 09:54:14,832 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:54:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 339 transitions. [2018-01-31 09:54:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-31 09:54:14,833 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:14,833 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 15, 14, 14, 14, 14, 14, 14, 14, 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 09:54:14,833 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 09:54:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1960231537, now seen corresponding path program 23 times [2018-01-31 09:54:14,834 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:14,834 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:14,834 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:14,834 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:14,834 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:14,844 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:15,296 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:15,296 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:15,301 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:54:15,311 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,312 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,313 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,315 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,317 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,319 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,322 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,326 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,337 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,363 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,410 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,489 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,511 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:15,736 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:16,178 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:17,002 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:18,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:19,817 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:20,084 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:21,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:21,690 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:21,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:21,943 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:21,943 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:54:21,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:54:21,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:54:21,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:54:21,944 INFO L87 Difference]: Start difference. First operand 331 states and 339 transitions. Second operand 33 states. [2018-01-31 09:54:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:22,333 INFO L93 Difference]: Finished difference Result 368 states and 378 transitions. [2018-01-31 09:54:22,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:54:22,334 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 310 [2018-01-31 09:54:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:22,335 INFO L225 Difference]: With dead ends: 368 [2018-01-31 09:54:22,335 INFO L226 Difference]: Without dead ends: 344 [2018-01-31 09:54:22,335 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:54:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-31 09:54:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 339. [2018-01-31 09:54:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-31 09:54:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 347 transitions. [2018-01-31 09:54:22,338 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 347 transitions. Word has length 310 [2018-01-31 09:54:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:22,338 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 347 transitions. [2018-01-31 09:54:22,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:54:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 347 transitions. [2018-01-31 09:54:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-31 09:54:22,339 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:22,340 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 16, 15, 15, 15, 15, 15, 15, 15, 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 09:54:22,340 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 09:54:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash -736741729, now seen corresponding path program 24 times [2018-01-31 09:54:22,340 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:22,340 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:22,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:22,340 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:22,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:22,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2430 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:22,859 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:22,859 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:22,863 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:54:22,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,876 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:22,988 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:23,071 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:23,254 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:23,566 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:23,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:24,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:24,445 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:25,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:26,919 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:27,808 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:29,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:30,583 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:32,392 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:34,214 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:54:34,216 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:34,228 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2430 backedges. 154 proven. 870 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-01-31 09:54:34,554 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:34,554 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 36] total 38 [2018-01-31 09:54:34,554 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-31 09:54:34,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-31 09:54:34,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2018-01-31 09:54:34,555 INFO L87 Difference]: Start difference. First operand 339 states and 347 transitions. Second operand 38 states. [2018-01-31 09:54:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:35,600 INFO L93 Difference]: Finished difference Result 376 states and 386 transitions. [2018-01-31 09:54:35,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:54:35,600 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 318 [2018-01-31 09:54:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:35,601 INFO L225 Difference]: With dead ends: 376 [2018-01-31 09:54:35,601 INFO L226 Difference]: Without dead ends: 352 [2018-01-31 09:54:35,602 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1923, Invalid=5387, Unknown=0, NotChecked=0, Total=7310 [2018-01-31 09:54:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-31 09:54:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2018-01-31 09:54:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-31 09:54:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 355 transitions. [2018-01-31 09:54:35,605 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 355 transitions. Word has length 318 [2018-01-31 09:54:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:35,605 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 355 transitions. [2018-01-31 09:54:35,605 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-31 09:54:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 355 transitions. [2018-01-31 09:54:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-01-31 09:54:35,606 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:35,606 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 17, 16, 16, 16, 16, 16, 16, 16, 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 09:54:35,606 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 09:54:35,606 INFO L82 PathProgramCache]: Analyzing trace with hash 720215245, now seen corresponding path program 25 times [2018-01-31 09:54:35,607 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:35,607 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:35,607 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:35,607 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:35,607 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:35,616 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:36,164 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:36,164 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:36,169 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:54:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:36,205 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:36,293 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:36,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-31 09:54:36,293 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 09:54:36,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 09:54:36,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:54:36,294 INFO L87 Difference]: Start difference. First operand 347 states and 355 transitions. Second operand 37 states. [2018-01-31 09:54:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:36,792 INFO L93 Difference]: Finished difference Result 384 states and 394 transitions. [2018-01-31 09:54:36,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-31 09:54:36,795 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 326 [2018-01-31 09:54:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:36,796 INFO L225 Difference]: With dead ends: 384 [2018-01-31 09:54:36,796 INFO L226 Difference]: Without dead ends: 360 [2018-01-31 09:54:36,797 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 09:54:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-01-31 09:54:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 355. [2018-01-31 09:54:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-01-31 09:54:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 363 transitions. [2018-01-31 09:54:36,800 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 363 transitions. Word has length 326 [2018-01-31 09:54:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:36,800 INFO L432 AbstractCegarLoop]: Abstraction has 355 states and 363 transitions. [2018-01-31 09:54:36,800 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 09:54:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 363 transitions. [2018-01-31 09:54:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-01-31 09:54:36,801 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:36,801 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 18, 17, 17, 17, 17, 17, 17, 17, 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 09:54:36,801 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 09:54:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1555368709, now seen corresponding path program 26 times [2018-01-31 09:54:36,802 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:36,802 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:36,802 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:36,802 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:54:36,802 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:36,813 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2682 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:37,458 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:37,458 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:37,464 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:54:37,475 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:37,498 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:54:37,507 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:37,509 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2682 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:37,788 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:54:37,788 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 09:54:37,789 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 09:54:37,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 09:54:37,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:54:37,789 INFO L87 Difference]: Start difference. First operand 355 states and 363 transitions. Second operand 39 states. [2018-01-31 09:54:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:54:39,098 INFO L93 Difference]: Finished difference Result 392 states and 402 transitions. [2018-01-31 09:54:39,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 09:54:39,099 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 334 [2018-01-31 09:54:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:54:39,100 INFO L225 Difference]: With dead ends: 392 [2018-01-31 09:54:39,100 INFO L226 Difference]: Without dead ends: 368 [2018-01-31 09:54:39,100 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 09:54:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-01-31 09:54:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 363. [2018-01-31 09:54:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-01-31 09:54:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 371 transitions. [2018-01-31 09:54:39,106 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 371 transitions. Word has length 334 [2018-01-31 09:54:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:54:39,106 INFO L432 AbstractCegarLoop]: Abstraction has 363 states and 371 transitions. [2018-01-31 09:54:39,106 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 09:54:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 371 transitions. [2018-01-31 09:54:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-01-31 09:54:39,107 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:54:39,107 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 18, 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 09:54:39,107 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 09:54:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1726202071, now seen corresponding path program 27 times [2018-01-31 09:54:39,107 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:54:39,107 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:54:39,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:39,108 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:54:39,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:54:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:54:39,119 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:54:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 09:54:40,472 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:54:40,472 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:54:40,477 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:54:40,489 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,491 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,497 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,508 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,524 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,556 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,602 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,731 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,785 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:40,983 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:41,009 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:41,138 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command Received shutdown request... [2018-01-31 09:54:41,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:42,040 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:42,402 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:42,695 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:42,939 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:43,494 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:43,910 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:54:43,911 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:54:43,917 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:54:43,917 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-31 09:54:43,918 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 09:54:43,920 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 09:54:43,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:54:43 BasicIcfg [2018-01-31 09:54:43,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:54:43,920 INFO L168 Benchmark]: Toolchain (without parser) took 156858.00 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 113.9 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 228.4 MB. Max. memory is 5.3 GB. [2018-01-31 09:54:43,921 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 148.9 MB. Free memory is still 118.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:54:43,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.61 ms. Allocated memory is still 148.9 MB. Free memory was 113.7 MB in the beginning and 105.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:54:43,921 INFO L168 Benchmark]: Boogie Preprocessor took 19.25 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 09:54:43,921 INFO L168 Benchmark]: RCFGBuilder took 363.51 ms. Allocated memory is still 148.9 MB. Free memory was 103.3 MB in the beginning and 84.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 5.3 GB. [2018-01-31 09:54:43,921 INFO L168 Benchmark]: IcfgTransformer took 93486.22 ms. Allocated memory was 148.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 84.9 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 220.4 MB. Max. memory is 5.3 GB. [2018-01-31 09:54:43,921 INFO L168 Benchmark]: TraceAbstraction took 62873.96 ms. Allocated memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: -14.7 MB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:54:43,922 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 148.9 MB. Free memory is still 118.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.61 ms. Allocated memory is still 148.9 MB. Free memory was 113.7 MB in the beginning and 105.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.25 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 363.51 ms. Allocated memory is still 148.9 MB. Free memory was 103.3 MB in the beginning and 84.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 5.3 GB. * IcfgTransformer took 93486.22 ms. Allocated memory was 148.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 84.9 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 220.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 62873.96 ms. Allocated memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: -14.7 MB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -6.4 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 : 77 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 1465 LocStat_NO_SUPPORTING_DISEQUALITIES : 3216 LocStat_NO_DISJUNCTIONS : -154 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 102 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 162 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 100 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.007740 RENAME_VARIABLES(MILLISECONDS) : 0.211246 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.000357 PROJECTAWAY(MILLISECONDS) : 0.071622 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.065788 DISJOIN(MILLISECONDS) : 0.623504 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.224824 ADD_EQUALITY(MILLISECONDS) : 0.004272 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.002378 #CONJOIN_DISJUNCTIVE : 1096 #RENAME_VARIABLES : 2401 #UNFREEZE : 0 #CONJOIN : 1530 #PROJECTAWAY : 1430 #ADD_WEAK_EQUALITY : 14 #DISJOIN : 377 #RENAME_VARIABLES_DISJUNCTIVE : 2445 #ADD_EQUALITY : 167 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 5 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 5 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 10 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was analyzing trace of length 343 with TraceHistMax 21, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. TIMEOUT Result, 62.8s OverallTime, 30 OverallIterations, 21 TraceHistogramMax, 14.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2127 SDtfs, 2182 SDslu, 39521 SDs, 0 SdLazy, 4939 SolverSat, 511 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6877 GetRequests, 5412 SyntacticMatches, 0 SemanticMatches, 1465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19508 ImplicationChecksByTransitivity, 23.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=363occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 29 MinimizatonAttempts, 185 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 25.8s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 11118 NumberOfCodeBlocks, 10934 NumberOfCodeBlocksAsserted, 207 NumberOfCheckSat, 11062 ConstructedInterpolants, 0 QuantifiedInterpolants, 4790324 SizeOfPredicates, 556 NumberOfNonLiveVariables, 7684 ConjunctsInSsa, 592 ConjunctsInUnsatCore, 56 InterpolantComputations, 3 PerfectInterpolantSequences, 33402/60568 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_09-54-43-926.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_09-54-43-926.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_09-54-43-926.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_09-54-43-926.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg20_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-54-43-926.csv Completed graceful shutdown