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/max60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 10:09:00,196 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 10:09:00,197 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 10:09:00,207 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 10:09:00,208 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 10:09:00,208 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 10:09:00,209 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 10:09:00,209 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 10:09:00,211 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 10:09:00,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 10:09:00,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 10:09:00,212 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 10:09:00,212 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 10:09:00,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 10:09:00,213 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 10:09:00,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 10:09:00,215 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 10:09:00,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 10:09:00,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 10:09:00,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 10:09:00,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 10:09:00,219 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 10:09:00,219 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 10:09:00,220 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 10:09:00,220 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 10:09:00,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 10:09:00,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 10:09:00,221 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 10:09:00,221 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 10:09:00,222 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 10:09:00,222 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 10:09:00,222 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 10:09:00,227 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 10:09:00,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 10:09:00,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 10:09:00,228 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 10:09:00,228 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 10:09:00,228 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 10:09:00,228 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 10:09:00,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 10:09:00,228 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 10:09:00,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 10:09:00,229 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 10:09:00,229 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 10:09:00,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 10:09:00,230 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 10:09:00,231 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 10:09:00,231 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 10:09:00,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 10:09:00,258 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 10:09:00,262 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 10:09:00,262 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 10:09:00,263 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 10:09:00,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60_true-unreach-call.i [2018-01-31 10:09:00,332 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 10:09:00,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 10:09:00,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 10:09:00,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 10:09:00,336 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 10:09:00,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4859861a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00, skipping insertion in model container [2018-01-31 10:09:00,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,347 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:09:00,356 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:09:00,432 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:09:00,446 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:09:00,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00 WrapperNode [2018-01-31 10:09:00,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 10:09:00,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 10:09:00,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 10:09:00,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 10:09:00,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 10:09:00,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 10:09:00,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 10:09:00,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 10:09:00,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (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 10:09:00,525 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 10:09:00,525 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 10:09:00,525 INFO L136 BoogieDeclarations]: Found implementation of procedure max [2018-01-31 10:09:00,525 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 10:09:00,525 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 10:09:00,526 INFO L128 BoogieDeclarations]: Found specification of procedure max [2018-01-31 10:09:00,526 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 10:09:00,526 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 10:09:00,526 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 10:09:00,941 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 10:09:00,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:09:00 BoogieIcfgContainer [2018-01-31 10:09:00,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 10:09:00,941 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 10:09:00,941 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 10:09:00,942 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 10:09:00,944 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:09:00" (1/1) ... [2018-01-31 10:09:00,948 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 10:09:00,949 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 10:09:00,949 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 10:09:00,973 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 10:09:00,990 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 10:09:01,024 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 10:10:30,953 INFO L314 AbstractInterpreter]: Visited 98 different actions 1248 times. Merged at 71 different actions 741 times. Widened at 1 different actions 1 times. Found 101 fixpoints after 15 different actions. Largest state had 68 variables. [2018-01-31 10:10:30,954 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 10:10:30,962 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 11 [2018-01-31 10:10:30,962 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 10:10:30,962 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 10:10:30,963 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select (select |v_#memory_int_14| |v_main_~#x~5.base_10|) (+ (* 4 v_main_~i~7_4) |v_main_~#x~5.offset_10| 4)), at (SUMMARY for call #t~mem16 := read~int(~#x~5.base, ~#x~5.offset + (~i~7 + 1) * 4, 4); srcloc: L33)) ((select (select |v_#memory_int_8| |v_main_~#x~5.base_5|) (+ |v_main_~#x~5.offset_5| 4)), at (SUMMARY for call #t~mem10 := read~int(~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29''')) ((select (select |v_#memory_int_2| v_max_~x.base_3) (+ (* 4 v_max_~i~3_8) v_max_~x.offset_3)), at (SUMMARY for call #t~mem2 := read~int(~x.base, ~x.offset + ~i~3 * 4, 4); srcloc: L10'')) ((select |v_#memory_int_18| |v_main_~#x~5.base_12|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 236, 4); srcloc: L32''''''')) ((select |v_#memory_int_16| |v_main_~#x~5.base_11|), at (SUMMARY for call write~int(#t~mem16, ~#x~5.base, ~#x~5.offset + ~i~7 * 4, 4); srcloc: L33')) ((select |v_#memory_int_6| |v_main_~#x~5.base_2|), at (SUMMARY for call write~int(#t~nondet5, ~#x~5.base, ~#x~5.offset + ~i~6 * 4, 4); srcloc: L24')) ((select (select |v_#memory_int_7| |v_main_~#x~5.base_4|) |v_main_~#x~5.offset_4|), at (SUMMARY for call #t~mem8 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29)) ((select |v_#memory_int_12| |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_13| |v_main_~#x~5.base_9|) |v_main_~#x~5.offset_9|), at (SUMMARY for call #t~mem13 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L31)) ((select |v_#memory_int_10| |v_main_~#x~5.base_6|), at (SUMMARY for call write~int(#t~mem10, ~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29'''')) ((select (select |v_#memory_int_1| v_max_~x.base_2) (+ (* 4 v_max_~i~3_7) v_max_~x.offset_2)), at (SUMMARY for call #t~mem1 := read~int(~x.base, ~x.offset + ~i~3 * 4, 4); srcloc: L10)) [2018-01-31 10:10:30,986 INFO L547 PartitionManager]: partitioning result: [2018-01-31 10:10:30,986 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 10:10:30,986 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 10:10:30,986 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:10:30,986 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:10:30,986 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 10:10:30,986 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:10:30,986 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:10:30,987 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 10:10:30,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:10:30 BasicIcfg [2018-01-31 10:10:30,998 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 10:10:30,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 10:10:30,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 10:10:31,000 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 10:10:31,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:09:00" (1/4) ... [2018-01-31 10:10:31,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aee54f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:10:31, skipping insertion in model container [2018-01-31 10:10:31,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:09:00" (2/4) ... [2018-01-31 10:10:31,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aee54f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:10:31, skipping insertion in model container [2018-01-31 10:10:31,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:09:00" (3/4) ... [2018-01-31 10:10:31,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aee54f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:10:31, skipping insertion in model container [2018-01-31 10:10:31,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:10:30" (4/4) ... [2018-01-31 10:10:31,002 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 10:10:31,007 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 10:10:31,014 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 10:10:31,036 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 10:10:31,036 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 10:10:31,037 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 10:10:31,037 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 10:10:31,037 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 10:10:31,037 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 10:10:31,037 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 10:10:31,037 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 10:10:31,037 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 10:10:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-01-31 10:10:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 10:10:31,049 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:31,049 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 10:10:31,049 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 10:10:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1993760935, now seen corresponding path program 1 times [2018-01-31 10:10:31,055 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:31,055 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:31,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,084 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:31,084 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:31,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:31,124 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 10:10:31,126 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:10:31,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 10:10:31,127 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 10:10:31,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 10:10:31,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:10:31,134 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 2 states. [2018-01-31 10:10:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:31,149 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2018-01-31 10:10:31,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 10:10:31,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-31 10:10:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:31,154 INFO L225 Difference]: With dead ends: 148 [2018-01-31 10:10:31,155 INFO L226 Difference]: Without dead ends: 77 [2018-01-31 10:10:31,156 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 10:10:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-31 10:10:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-01-31 10:10:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-31 10:10:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2018-01-31 10:10:31,180 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 36 [2018-01-31 10:10:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:31,181 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2018-01-31 10:10:31,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 10:10:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2018-01-31 10:10:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-31 10:10:31,182 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:31,182 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 10:10:31,182 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 10:10:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1996519795, now seen corresponding path program 1 times [2018-01-31 10:10:31,182 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:31,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:31,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,183 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:31,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:31,191 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:31,244 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 10:10:31,245 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:10:31,245 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 10:10:31,246 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 10:10:31,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 10:10:31,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 10:10:31,246 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 3 states. [2018-01-31 10:10:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:31,294 INFO L93 Difference]: Finished difference Result 141 states and 158 transitions. [2018-01-31 10:10:31,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 10:10:31,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-01-31 10:10:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:31,296 INFO L225 Difference]: With dead ends: 141 [2018-01-31 10:10:31,296 INFO L226 Difference]: Without dead ends: 84 [2018-01-31 10:10:31,296 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 10:10:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-31 10:10:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2018-01-31 10:10:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-31 10:10:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2018-01-31 10:10:31,301 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 38 [2018-01-31 10:10:31,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:31,301 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2018-01-31 10:10:31,301 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 10:10:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2018-01-31 10:10:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 10:10:31,302 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:31,302 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 10:10:31,302 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 10:10:31,302 INFO L82 PathProgramCache]: Analyzing trace with hash 603168805, now seen corresponding path program 1 times [2018-01-31 10:10:31,302 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:31,302 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:31,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,303 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:31,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:31,312 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:31,384 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 10:10:31,384 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:31,384 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 10:10:31,407 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:31,438 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:31,457 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 10:10:31,474 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 10:10:31,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 10:10:31,475 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 10:10:31,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 10:10:31,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 10:10:31,475 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 6 states. [2018-01-31 10:10:31,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:31,696 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2018-01-31 10:10:31,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 10:10:31,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-01-31 10:10:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:31,697 INFO L225 Difference]: With dead ends: 156 [2018-01-31 10:10:31,697 INFO L226 Difference]: Without dead ends: 99 [2018-01-31 10:10:31,697 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 10:10:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-31 10:10:31,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2018-01-31 10:10:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-31 10:10:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2018-01-31 10:10:31,702 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 46 [2018-01-31 10:10:31,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:31,702 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2018-01-31 10:10:31,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 10:10:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2018-01-31 10:10:31,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-31 10:10:31,703 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:31,703 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 10:10:31,703 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 10:10:31,704 INFO L82 PathProgramCache]: Analyzing trace with hash -40978709, now seen corresponding path program 1 times [2018-01-31 10:10:31,704 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:31,704 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:31,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,704 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:31,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:31,715 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:31,796 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 10:10:31,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:31,796 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 10:10:31,808 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:31,829 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:32,102 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 10:10:32,124 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:32,124 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 10:10:32,124 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 10:10:32,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 10:10:32,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 10:10:32,125 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 10 states. [2018-01-31 10:10:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:32,407 INFO L93 Difference]: Finished difference Result 174 states and 192 transitions. [2018-01-31 10:10:32,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 10:10:32,409 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-01-31 10:10:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:32,410 INFO L225 Difference]: With dead ends: 174 [2018-01-31 10:10:32,410 INFO L226 Difference]: Without dead ends: 115 [2018-01-31 10:10:32,410 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 10:10:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-01-31 10:10:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2018-01-31 10:10:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-31 10:10:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2018-01-31 10:10:32,415 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 62 [2018-01-31 10:10:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:32,415 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2018-01-31 10:10:32,415 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 10:10:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2018-01-31 10:10:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 10:10:32,418 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:32,418 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 10:10:32,418 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 10:10:32,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2138343503, now seen corresponding path program 2 times [2018-01-31 10:10:32,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:32,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:32,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:32,419 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:32,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:32,443 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:32,551 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 10:10:32,551 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:32,551 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 10:10:32,555 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:10:32,565 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:32,569 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:32,570 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:32,572 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:32,702 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 10:10:32,719 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:32,719 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 10:10:32,719 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 10:10:32,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 10:10:32,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 10:10:32,720 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 14 states. [2018-01-31 10:10:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:32,994 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2018-01-31 10:10:32,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 10:10:32,994 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-01-31 10:10:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:32,995 INFO L225 Difference]: With dead ends: 198 [2018-01-31 10:10:32,995 INFO L226 Difference]: Without dead ends: 131 [2018-01-31 10:10:32,996 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 10:10:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-31 10:10:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2018-01-31 10:10:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-31 10:10:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2018-01-31 10:10:33,000 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 78 [2018-01-31 10:10:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:33,000 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2018-01-31 10:10:33,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 10:10:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2018-01-31 10:10:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-31 10:10:33,001 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:33,001 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 10:10:33,001 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 10:10:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1073734263, now seen corresponding path program 3 times [2018-01-31 10:10:33,001 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:33,002 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:33,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:33,002 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:33,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:33,016 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:33,115 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 10:10:33,115 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:33,115 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 10:10:33,120 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:10:33,128 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:33,136 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:33,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:33,155 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:33,156 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:33,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:33,234 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 10:10:33,251 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:33,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-31 10:10:33,251 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 10:10:33,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 10:10:33,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-31 10:10:33,252 INFO L87 Difference]: Start difference. First operand 121 states and 130 transitions. Second operand 18 states. [2018-01-31 10:10:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:33,554 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2018-01-31 10:10:33,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 10:10:33,556 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-01-31 10:10:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:33,557 INFO L225 Difference]: With dead ends: 222 [2018-01-31 10:10:33,557 INFO L226 Difference]: Without dead ends: 147 [2018-01-31 10:10:33,557 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 10:10:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-31 10:10:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2018-01-31 10:10:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-01-31 10:10:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2018-01-31 10:10:33,562 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 94 [2018-01-31 10:10:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:33,562 INFO L432 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2018-01-31 10:10:33,562 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 10:10:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2018-01-31 10:10:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-31 10:10:33,564 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:33,564 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 10:10:33,564 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 10:10:33,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1727924419, now seen corresponding path program 4 times [2018-01-31 10:10:33,564 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:33,565 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:33,565 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:33,565 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:33,565 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:33,576 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:33,690 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 10:10:33,690 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:33,690 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 10:10:33,695 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:10:33,737 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:33,742 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:33,987 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 10:10:34,004 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:34,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 10:10:34,004 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 10:10:34,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 10:10:34,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 10:10:34,005 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand 15 states. [2018-01-31 10:10:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:34,109 INFO L93 Difference]: Finished difference Result 233 states and 250 transitions. [2018-01-31 10:10:34,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 10:10:34,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2018-01-31 10:10:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:34,110 INFO L225 Difference]: With dead ends: 233 [2018-01-31 10:10:34,110 INFO L226 Difference]: Without dead ends: 150 [2018-01-31 10:10:34,110 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 10:10:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-31 10:10:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2018-01-31 10:10:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-31 10:10:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2018-01-31 10:10:34,115 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 110 [2018-01-31 10:10:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:34,115 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2018-01-31 10:10:34,115 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 10:10:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2018-01-31 10:10:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-31 10:10:34,116 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:34,117 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 10:10:34,117 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 10:10:34,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1198114603, now seen corresponding path program 5 times [2018-01-31 10:10:34,117 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:34,117 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:34,117 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:34,117 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:34,117 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:34,127 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:34,288 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 10:10:34,288 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:34,288 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 10:10:34,293 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:10:34,299 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,304 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,307 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,309 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,314 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,334 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:34,353 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:34,354 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:34,504 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 10:10:34,522 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:34,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 10:10:34,523 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 10:10:34,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 10:10:34,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 10:10:34,524 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 24 states. [2018-01-31 10:10:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:34,875 INFO L93 Difference]: Finished difference Result 254 states and 272 transitions. [2018-01-31 10:10:34,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 10:10:34,879 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2018-01-31 10:10:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:34,880 INFO L225 Difference]: With dead ends: 254 [2018-01-31 10:10:34,880 INFO L226 Difference]: Without dead ends: 171 [2018-01-31 10:10:34,880 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 10:10:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-31 10:10:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-01-31 10:10:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-31 10:10:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2018-01-31 10:10:34,884 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 118 [2018-01-31 10:10:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:34,884 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2018-01-31 10:10:34,884 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 10:10:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2018-01-31 10:10:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-31 10:10:34,885 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:34,885 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 10:10:34,885 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 10:10:34,885 INFO L82 PathProgramCache]: Analyzing trace with hash 813025179, now seen corresponding path program 6 times [2018-01-31 10:10:34,885 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:34,885 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:34,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:34,886 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:34,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:34,904 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:35,152 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 10:10:35,152 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:35,152 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 10:10:35,157 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:10:35,166 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,177 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,185 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,195 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:35,203 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:35,205 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:35,337 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 10:10:35,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:35,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2018-01-31 10:10:35,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 10:10:35,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 10:10:35,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-31 10:10:35,356 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 28 states. [2018-01-31 10:10:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:35,979 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2018-01-31 10:10:35,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 10:10:35,980 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-31 10:10:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:35,981 INFO L225 Difference]: With dead ends: 278 [2018-01-31 10:10:35,981 INFO L226 Difference]: Without dead ends: 187 [2018-01-31 10:10:35,983 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=495, Invalid=2157, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 10:10:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-31 10:10:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2018-01-31 10:10:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-31 10:10:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 186 transitions. [2018-01-31 10:10:35,986 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 186 transitions. Word has length 134 [2018-01-31 10:10:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:35,986 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 186 transitions. [2018-01-31 10:10:35,986 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 10:10:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 186 transitions. [2018-01-31 10:10:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-31 10:10:35,990 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:35,990 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 10:10:35,990 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 10:10:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash -865140639, now seen corresponding path program 7 times [2018-01-31 10:10:35,991 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:35,991 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:35,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:35,991 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:35,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:36,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:36,207 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 10:10:36,207 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:36,207 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 10:10:36,213 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:36,232 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:36,256 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 10:10:36,273 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:36,273 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 10:10:36,273 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 10:10:36,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 10:10:36,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 10:10:36,274 INFO L87 Difference]: Start difference. First operand 177 states and 186 transitions. Second operand 21 states. [2018-01-31 10:10:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:36,476 INFO L93 Difference]: Finished difference Result 289 states and 306 transitions. [2018-01-31 10:10:36,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 10:10:36,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2018-01-31 10:10:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:36,477 INFO L225 Difference]: With dead ends: 289 [2018-01-31 10:10:36,477 INFO L226 Difference]: Without dead ends: 190 [2018-01-31 10:10:36,477 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 10:10:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-31 10:10:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 185. [2018-01-31 10:10:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-31 10:10:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 194 transitions. [2018-01-31 10:10:36,480 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 194 transitions. Word has length 150 [2018-01-31 10:10:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:36,480 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 194 transitions. [2018-01-31 10:10:36,480 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 10:10:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 194 transitions. [2018-01-31 10:10:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-31 10:10:36,481 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:36,481 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 10:10:36,481 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 10:10:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash -234370567, now seen corresponding path program 8 times [2018-01-31 10:10:36,481 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:36,482 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:36,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:36,482 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:36,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:36,491 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:36,684 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 10:10:36,684 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:36,684 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 10:10:36,689 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:10:36,696 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:36,705 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:36,707 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:36,708 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:36,751 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 10:10:36,768 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:36,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 10:10:36,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 10:10:36,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 10:10:36,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 10:10:36,769 INFO L87 Difference]: Start difference. First operand 185 states and 194 transitions. Second operand 23 states. [2018-01-31 10:10:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:36,984 INFO L93 Difference]: Finished difference Result 297 states and 314 transitions. [2018-01-31 10:10:36,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 10:10:36,988 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2018-01-31 10:10:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:36,989 INFO L225 Difference]: With dead ends: 297 [2018-01-31 10:10:36,989 INFO L226 Difference]: Without dead ends: 198 [2018-01-31 10:10:36,989 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:10:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-31 10:10:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2018-01-31 10:10:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-31 10:10:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 202 transitions. [2018-01-31 10:10:36,992 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 202 transitions. Word has length 158 [2018-01-31 10:10:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:36,992 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 202 transitions. [2018-01-31 10:10:36,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 10:10:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 202 transitions. [2018-01-31 10:10:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-31 10:10:36,993 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:36,993 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 10:10:36,993 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 10:10:36,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1016497263, now seen corresponding path program 9 times [2018-01-31 10:10:36,994 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:36,994 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:36,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:36,994 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:36,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:37,005 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:37,252 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 10:10:37,252 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:37,252 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 10:10:37,257 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:10:37,265 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,267 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,270 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,284 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,468 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:37,468 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:37,470 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:37,666 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 10:10:37,683 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:37,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2018-01-31 10:10:37,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 10:10:37,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 10:10:37,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 10:10:37,684 INFO L87 Difference]: Start difference. First operand 193 states and 202 transitions. Second operand 36 states. [2018-01-31 10:10:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:38,560 INFO L93 Difference]: Finished difference Result 318 states and 336 transitions. [2018-01-31 10:10:38,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 10:10:38,570 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2018-01-31 10:10:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:38,571 INFO L225 Difference]: With dead ends: 318 [2018-01-31 10:10:38,571 INFO L226 Difference]: Without dead ends: 219 [2018-01-31 10:10:38,572 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=845, Invalid=3711, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 10:10:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-31 10:10:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 209. [2018-01-31 10:10:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-31 10:10:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 218 transitions. [2018-01-31 10:10:38,575 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 218 transitions. Word has length 166 [2018-01-31 10:10:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:38,576 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 218 transitions. [2018-01-31 10:10:38,576 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 10:10:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 218 transitions. [2018-01-31 10:10:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-31 10:10:38,577 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:38,577 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 10:10:38,577 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 10:10:38,580 INFO L82 PathProgramCache]: Analyzing trace with hash 135659095, now seen corresponding path program 10 times [2018-01-31 10:10:38,580 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:38,580 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:38,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:38,581 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:38,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:38,601 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:38,954 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 10:10:38,954 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:38,954 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 10:10:38,959 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:10:39,063 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:39,065 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:39,110 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 10:10:39,128 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:39,128 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 10:10:39,128 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 10:10:39,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 10:10:39,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 10:10:39,129 INFO L87 Difference]: Start difference. First operand 209 states and 218 transitions. Second operand 27 states. [2018-01-31 10:10:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:39,671 INFO L93 Difference]: Finished difference Result 329 states and 346 transitions. [2018-01-31 10:10:39,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 10:10:39,676 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2018-01-31 10:10:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:39,676 INFO L225 Difference]: With dead ends: 329 [2018-01-31 10:10:39,677 INFO L226 Difference]: Without dead ends: 222 [2018-01-31 10:10:39,677 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 10:10:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-31 10:10:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 217. [2018-01-31 10:10:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-31 10:10:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 226 transitions. [2018-01-31 10:10:39,680 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 226 transitions. Word has length 182 [2018-01-31 10:10:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:39,680 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 226 transitions. [2018-01-31 10:10:39,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 10:10:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 226 transitions. [2018-01-31 10:10:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-31 10:10:39,682 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:39,682 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 10:10:39,682 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 10:10:39,682 INFO L82 PathProgramCache]: Analyzing trace with hash -396204049, now seen corresponding path program 11 times [2018-01-31 10:10:39,682 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:39,682 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:39,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:39,683 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:39,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:39,692 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:40,174 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 10:10:40,174 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:40,174 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 10:10:40,179 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:10:40,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,186 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,187 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,189 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,191 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,193 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,199 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,203 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,244 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,260 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,268 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,291 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:40,377 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:40,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:40,474 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 10:10:40,492 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:40,492 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 10:10:40,492 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:10:40,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:10:40,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:10:40,492 INFO L87 Difference]: Start difference. First operand 217 states and 226 transitions. Second operand 29 states. [2018-01-31 10:10:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:41,125 INFO L93 Difference]: Finished difference Result 337 states and 354 transitions. [2018-01-31 10:10:41,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 10:10:41,125 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-01-31 10:10:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:41,126 INFO L225 Difference]: With dead ends: 337 [2018-01-31 10:10:41,126 INFO L226 Difference]: Without dead ends: 230 [2018-01-31 10:10:41,127 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:10:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-31 10:10:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2018-01-31 10:10:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-01-31 10:10:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 234 transitions. [2018-01-31 10:10:41,129 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 234 transitions. Word has length 190 [2018-01-31 10:10:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:41,130 INFO L432 AbstractCegarLoop]: Abstraction has 225 states and 234 transitions. [2018-01-31 10:10:41,130 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:10:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 234 transitions. [2018-01-31 10:10:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-31 10:10:41,130 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:41,130 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 10:10:41,130 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 10:10:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash -690505337, now seen corresponding path program 12 times [2018-01-31 10:10:41,131 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:41,131 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:41,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:41,131 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:41,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:41,140 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:41,743 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 10:10:41,743 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:41,743 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 10:10:41,748 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:10:41,756 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,774 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,783 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,813 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:41,900 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:42,077 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:42,358 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:42,500 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:42,604 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:42,642 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:43,055 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:43,057 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:43,063 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:43,109 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 10:10:43,127 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:43,128 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 10:10:43,128 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 10:10:43,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 10:10:43,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 10:10:43,128 INFO L87 Difference]: Start difference. First operand 225 states and 234 transitions. Second operand 31 states. [2018-01-31 10:10:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:43,648 INFO L93 Difference]: Finished difference Result 345 states and 362 transitions. [2018-01-31 10:10:43,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 10:10:43,648 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-31 10:10:43,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:43,649 INFO L225 Difference]: With dead ends: 345 [2018-01-31 10:10:43,649 INFO L226 Difference]: Without dead ends: 238 [2018-01-31 10:10:43,650 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 10:10:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-31 10:10:43,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2018-01-31 10:10:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-31 10:10:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 242 transitions. [2018-01-31 10:10:43,653 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 242 transitions. Word has length 198 [2018-01-31 10:10:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:43,653 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 242 transitions. [2018-01-31 10:10:43,653 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 10:10:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 242 transitions. [2018-01-31 10:10:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-31 10:10:43,655 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:43,655 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 10:10:43,655 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 10:10:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash 806220575, now seen corresponding path program 13 times [2018-01-31 10:10:43,656 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:43,656 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:43,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:43,656 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:43,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:43,667 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:44,175 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 10:10:44,176 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:44,176 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 10:10:44,180 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:44,205 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:44,267 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 10:10:44,284 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:44,284 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 10:10:44,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:10:44,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:10:44,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:10:44,285 INFO L87 Difference]: Start difference. First operand 233 states and 242 transitions. Second operand 33 states. [2018-01-31 10:10:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:44,693 INFO L93 Difference]: Finished difference Result 353 states and 370 transitions. [2018-01-31 10:10:44,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 10:10:44,707 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2018-01-31 10:10:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:44,708 INFO L225 Difference]: With dead ends: 353 [2018-01-31 10:10:44,708 INFO L226 Difference]: Without dead ends: 246 [2018-01-31 10:10:44,709 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 205 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 10:10:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-31 10:10:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 241. [2018-01-31 10:10:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-01-31 10:10:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 250 transitions. [2018-01-31 10:10:44,712 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 250 transitions. Word has length 206 [2018-01-31 10:10:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:44,712 INFO L432 AbstractCegarLoop]: Abstraction has 241 states and 250 transitions. [2018-01-31 10:10:44,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:10:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 250 transitions. [2018-01-31 10:10:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-31 10:10:44,713 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:44,713 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 10:10:44,713 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 10:10:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 949818551, now seen corresponding path program 14 times [2018-01-31 10:10:44,713 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:44,713 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:44,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:44,713 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:10:44,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:44,729 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:45,595 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 10:10:45,595 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:45,595 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 10:10:45,600 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:10:45,609 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:45,621 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:45,623 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:45,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:45,666 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 10:10:45,683 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:45,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 10:10:45,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 10:10:45,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 10:10:45,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 10:10:45,684 INFO L87 Difference]: Start difference. First operand 241 states and 250 transitions. Second operand 35 states. [2018-01-31 10:10:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:46,108 INFO L93 Difference]: Finished difference Result 361 states and 378 transitions. [2018-01-31 10:10:46,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 10:10:46,118 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 214 [2018-01-31 10:10:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:46,119 INFO L225 Difference]: With dead ends: 361 [2018-01-31 10:10:46,119 INFO L226 Difference]: Without dead ends: 254 [2018-01-31 10:10:46,120 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 10:10:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-31 10:10:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2018-01-31 10:10:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-01-31 10:10:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 258 transitions. [2018-01-31 10:10:46,123 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 258 transitions. Word has length 214 [2018-01-31 10:10:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:46,123 INFO L432 AbstractCegarLoop]: Abstraction has 249 states and 258 transitions. [2018-01-31 10:10:46,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 10:10:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 258 transitions. [2018-01-31 10:10:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-31 10:10:46,124 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:46,124 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 10:10:46,124 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 10:10:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash 488447567, now seen corresponding path program 15 times [2018-01-31 10:10:46,124 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:46,124 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:46,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:46,125 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:46,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:46,134 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:46,861 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 10:10:46,861 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:46,861 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 10:10:46,866 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:10:46,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:46,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:46,880 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:46,884 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:46,893 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:46,952 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:47,003 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:47,188 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:10:47,189 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:47,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:47,466 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 10:10:47,483 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:47,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2018-01-31 10:10:47,484 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 10:10:47,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 10:10:47,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 10:10:47,485 INFO L87 Difference]: Start difference. First operand 249 states and 258 transitions. Second operand 50 states. [2018-01-31 10:10:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:48,615 INFO L93 Difference]: Finished difference Result 382 states and 400 transitions. [2018-01-31 10:10:48,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 10:10:48,615 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 222 [2018-01-31 10:10:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:48,616 INFO L225 Difference]: With dead ends: 382 [2018-01-31 10:10:48,616 INFO L226 Difference]: Without dead ends: 275 [2018-01-31 10:10:48,618 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 10:10:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-01-31 10:10:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 265. [2018-01-31 10:10:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-01-31 10:10:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 274 transitions. [2018-01-31 10:10:48,621 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 274 transitions. Word has length 222 [2018-01-31 10:10:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:48,621 INFO L432 AbstractCegarLoop]: Abstraction has 265 states and 274 transitions. [2018-01-31 10:10:48,621 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 10:10:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 274 transitions. [2018-01-31 10:10:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-31 10:10:48,622 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:48,622 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 10:10:48,622 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 10:10:48,622 INFO L82 PathProgramCache]: Analyzing trace with hash -750757099, now seen corresponding path program 16 times [2018-01-31 10:10:48,622 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:48,622 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:48,623 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:48,623 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:48,623 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:48,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:49,246 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 10:10:49,246 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:49,246 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 10:10:49,251 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:10:49,370 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:49,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:49,416 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 10:10:49,434 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:49,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 10:10:49,434 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 10:10:49,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 10:10:49,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 10:10:49,435 INFO L87 Difference]: Start difference. First operand 265 states and 274 transitions. Second operand 39 states. [2018-01-31 10:10:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:50,029 INFO L93 Difference]: Finished difference Result 393 states and 410 transitions. [2018-01-31 10:10:50,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 10:10:50,029 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 238 [2018-01-31 10:10:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:50,030 INFO L225 Difference]: With dead ends: 393 [2018-01-31 10:10:50,030 INFO L226 Difference]: Without dead ends: 278 [2018-01-31 10:10:50,031 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 10:10:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-01-31 10:10:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2018-01-31 10:10:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-01-31 10:10:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 282 transitions. [2018-01-31 10:10:50,034 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 282 transitions. Word has length 238 [2018-01-31 10:10:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:50,035 INFO L432 AbstractCegarLoop]: Abstraction has 273 states and 282 transitions. [2018-01-31 10:10:50,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 10:10:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 282 transitions. [2018-01-31 10:10:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-31 10:10:50,035 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:50,036 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 10:10:50,036 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 10:10:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1730354349, now seen corresponding path program 17 times [2018-01-31 10:10:50,036 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:50,036 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:50,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:50,036 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:50,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:50,047 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:50,612 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 10:10:50,613 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:50,613 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:10:50,634 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:10:50,650 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,654 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,658 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,666 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,668 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,694 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:50,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:51,210 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:51,403 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:51,758 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:52,341 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:10:52,344 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:52,348 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:52,769 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 10:10:52,788 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:52,788 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 56 [2018-01-31 10:10:52,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-31 10:10:52,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-31 10:10:52,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 10:10:52,789 INFO L87 Difference]: Start difference. First operand 273 states and 282 transitions. Second operand 56 states. [2018-01-31 10:10:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:10:54,148 INFO L93 Difference]: Finished difference Result 414 states and 432 transitions. [2018-01-31 10:10:54,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 10:10:54,149 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 246 [2018-01-31 10:10:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:10:54,150 INFO L225 Difference]: With dead ends: 414 [2018-01-31 10:10:54,150 INFO L226 Difference]: Without dead ends: 299 [2018-01-31 10:10:54,151 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2205, Invalid=9351, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 10:10:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-01-31 10:10:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2018-01-31 10:10:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-01-31 10:10:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 298 transitions. [2018-01-31 10:10:54,159 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 298 transitions. Word has length 246 [2018-01-31 10:10:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:10:54,159 INFO L432 AbstractCegarLoop]: Abstraction has 289 states and 298 transitions. [2018-01-31 10:10:54,159 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-31 10:10:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 298 transitions. [2018-01-31 10:10:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-31 10:10:54,160 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:10:54,160 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 10:10:54,160 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 10:10:54,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1652282227, now seen corresponding path program 18 times [2018-01-31 10:10:54,160 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:10:54,160 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:10:54,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:54,161 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:10:54,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:10:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:10:54,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:10:54,828 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 10:10:54,828 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:10:54,828 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 10:10:54,832 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:10:54,843 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:54,845 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:54,847 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:54,852 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:54,857 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:54,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:54,910 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:55,003 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:55,073 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:55,128 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:55,244 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:55,462 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:56,074 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:56,367 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:56,472 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:57,133 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:57,236 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:57,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:58,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:10:58,289 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:10:58,295 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:10:59,486 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 10:10:59,505 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:10:59,505 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21] total 60 [2018-01-31 10:10:59,505 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-31 10:10:59,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-31 10:10:59,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2018-01-31 10:10:59,506 INFO L87 Difference]: Start difference. First operand 289 states and 298 transitions. Second operand 60 states. [2018-01-31 10:11:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:11:00,894 INFO L93 Difference]: Finished difference Result 438 states and 456 transitions. [2018-01-31 10:11:00,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 10:11:00,894 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 262 [2018-01-31 10:11:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:11:00,895 INFO L225 Difference]: With dead ends: 438 [2018-01-31 10:11:00,895 INFO L226 Difference]: Without dead ends: 315 [2018-01-31 10:11:00,896 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2495, Invalid=10845, Unknown=0, NotChecked=0, Total=13340 [2018-01-31 10:11:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-01-31 10:11:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 305. [2018-01-31 10:11:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-01-31 10:11:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 314 transitions. [2018-01-31 10:11:00,899 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 314 transitions. Word has length 262 [2018-01-31 10:11:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:11:00,900 INFO L432 AbstractCegarLoop]: Abstraction has 305 states and 314 transitions. [2018-01-31 10:11:00,900 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-31 10:11:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 314 transitions. [2018-01-31 10:11:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-01-31 10:11:00,901 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:11:00,901 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 10:11:00,901 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 10:11:00,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1028011065, now seen corresponding path program 19 times [2018-01-31 10:11:00,901 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:11:00,901 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:11:00,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:00,901 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:11:00,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:00,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:11:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:11:01,957 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:11:01,957 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 10:11:01,962 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:11:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:01,991 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:11:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:11:02,090 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:11:02,090 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 10:11:02,090 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 10:11:02,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 10:11:02,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 10:11:02,091 INFO L87 Difference]: Start difference. First operand 305 states and 314 transitions. Second operand 45 states. [2018-01-31 10:11:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:11:02,764 INFO L93 Difference]: Finished difference Result 449 states and 466 transitions. [2018-01-31 10:11:02,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 10:11:02,765 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 278 [2018-01-31 10:11:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:11:02,766 INFO L225 Difference]: With dead ends: 449 [2018-01-31 10:11:02,766 INFO L226 Difference]: Without dead ends: 318 [2018-01-31 10:11:02,766 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 10:11:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-01-31 10:11:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 313. [2018-01-31 10:11:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-01-31 10:11:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 322 transitions. [2018-01-31 10:11:02,769 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 322 transitions. Word has length 278 [2018-01-31 10:11:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:11:02,770 INFO L432 AbstractCegarLoop]: Abstraction has 313 states and 322 transitions. [2018-01-31 10:11:02,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 10:11:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 322 transitions. [2018-01-31 10:11:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-31 10:11:02,770 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:11:02,771 INFO L351 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 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 10:11:02,771 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 10:11:02,771 INFO L82 PathProgramCache]: Analyzing trace with hash 112033233, now seen corresponding path program 20 times [2018-01-31 10:11:02,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:11:02,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:11:02,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:02,771 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:11:02,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:02,782 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:11:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:11:03,529 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:11:03,529 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 10:11:03,533 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:11:03,544 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:03,567 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:03,577 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:11:03,580 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:11:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:11:03,695 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:11:03,695 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2018-01-31 10:11:03,696 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-31 10:11:03,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-31 10:11:03,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 10:11:03,696 INFO L87 Difference]: Start difference. First operand 313 states and 322 transitions. Second operand 47 states. [2018-01-31 10:11:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:11:04,448 INFO L93 Difference]: Finished difference Result 457 states and 474 transitions. [2018-01-31 10:11:04,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-31 10:11:04,448 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 286 [2018-01-31 10:11:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:11:04,449 INFO L225 Difference]: With dead ends: 457 [2018-01-31 10:11:04,449 INFO L226 Difference]: Without dead ends: 326 [2018-01-31 10:11:04,450 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 10:11:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-01-31 10:11:04,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2018-01-31 10:11:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-01-31 10:11:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 330 transitions. [2018-01-31 10:11:04,453 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 330 transitions. Word has length 286 [2018-01-31 10:11:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:11:04,453 INFO L432 AbstractCegarLoop]: Abstraction has 321 states and 330 transitions. [2018-01-31 10:11:04,453 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-31 10:11:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 330 transitions. [2018-01-31 10:11:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-31 10:11:04,454 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:11:04,454 INFO L351 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 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 10:11:04,454 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 10:11:04,454 INFO L82 PathProgramCache]: Analyzing trace with hash 90025833, now seen corresponding path program 21 times [2018-01-31 10:11:04,455 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:11:04,455 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:11:04,455 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:04,455 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:11:04,455 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:04,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:11:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:11:05,556 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:11:05,556 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 10:11:05,561 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:11:05,571 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,585 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,598 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,611 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,632 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,658 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,754 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:05,792 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:06,002 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:06,276 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:06,412 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:11:06,413 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:11:06,417 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:11:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 170 proven. 380 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-01-31 10:11:07,098 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:11:07,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 26] total 71 [2018-01-31 10:11:07,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-01-31 10:11:07,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-01-31 10:11:07,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 10:11:07,099 INFO L87 Difference]: Start difference. First operand 321 states and 330 transitions. Second operand 71 states. [2018-01-31 10:11:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:11:09,665 INFO L93 Difference]: Finished difference Result 478 states and 496 transitions. [2018-01-31 10:11:09,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 10:11:09,665 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 294 [2018-01-31 10:11:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:11:09,666 INFO L225 Difference]: With dead ends: 478 [2018-01-31 10:11:09,666 INFO L226 Difference]: Without dead ends: 347 [2018-01-31 10:11:09,668 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3896, Invalid=18156, Unknown=0, NotChecked=0, Total=22052 [2018-01-31 10:11:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-01-31 10:11:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 337. [2018-01-31 10:11:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-31 10:11:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 346 transitions. [2018-01-31 10:11:09,671 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 346 transitions. Word has length 294 [2018-01-31 10:11:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:11:09,671 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 346 transitions. [2018-01-31 10:11:09,671 INFO L433 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-01-31 10:11:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 346 transitions. [2018-01-31 10:11:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-31 10:11:09,672 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:11:09,673 INFO L351 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 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 10:11:09,673 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 10:11:09,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1842128337, now seen corresponding path program 22 times [2018-01-31 10:11:09,673 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:11:09,673 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:11:09,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:09,673 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:11:09,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:09,684 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:11:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:11:10,584 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:11:10,584 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 10:11:10,589 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:11:11,293 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:11:11,297 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:11:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:11:11,390 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:11:11,390 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2018-01-31 10:11:11,391 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-31 10:11:11,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-31 10:11:11,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-01-31 10:11:11,391 INFO L87 Difference]: Start difference. First operand 337 states and 346 transitions. Second operand 51 states. [2018-01-31 10:11:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:11:12,814 INFO L93 Difference]: Finished difference Result 489 states and 506 transitions. [2018-01-31 10:11:12,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-31 10:11:12,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 310 [2018-01-31 10:11:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:11:12,816 INFO L225 Difference]: With dead ends: 489 [2018-01-31 10:11:12,816 INFO L226 Difference]: Without dead ends: 350 [2018-01-31 10:11:12,816 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2018-01-31 10:11:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-01-31 10:11:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2018-01-31 10:11:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-01-31 10:11:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 354 transitions. [2018-01-31 10:11:12,830 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 354 transitions. Word has length 310 [2018-01-31 10:11:12,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:11:12,830 INFO L432 AbstractCegarLoop]: Abstraction has 345 states and 354 transitions. [2018-01-31 10:11:12,830 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-31 10:11:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 354 transitions. [2018-01-31 10:11:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-31 10:11:12,832 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:11:12,832 INFO L351 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 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 10:11:12,832 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 10:11:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1011762119, now seen corresponding path program 23 times [2018-01-31 10:11:12,832 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:11:12,832 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:11:12,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:12,833 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:11:12,833 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:12,850 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:11:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:11:14,185 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:11:14,185 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 10:11:14,190 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:11:14,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,201 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,202 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,204 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,211 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,214 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,219 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,221 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,227 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,232 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,236 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,249 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,268 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,345 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,441 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:14,906 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:15,236 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:15,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:16,931 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:19,653 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:21,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:24,745 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:11:24,752 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:11:24,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:11:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:11:24,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:11:24,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2018-01-31 10:11:24,904 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 10:11:24,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 10:11:24,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:11:24,905 INFO L87 Difference]: Start difference. First operand 345 states and 354 transitions. Second operand 53 states. [2018-01-31 10:11:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:11:26,054 INFO L93 Difference]: Finished difference Result 497 states and 514 transitions. [2018-01-31 10:11:26,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-31 10:11:26,054 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 318 [2018-01-31 10:11:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:11:26,055 INFO L225 Difference]: With dead ends: 497 [2018-01-31 10:11:26,055 INFO L226 Difference]: Without dead ends: 358 [2018-01-31 10:11:26,055 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 10:11:26,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-01-31 10:11:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 353. [2018-01-31 10:11:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-01-31 10:11:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 362 transitions. [2018-01-31 10:11:26,060 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 362 transitions. Word has length 318 [2018-01-31 10:11:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:11:26,060 INFO L432 AbstractCegarLoop]: Abstraction has 353 states and 362 transitions. [2018-01-31 10:11:26,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 10:11:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 362 transitions. [2018-01-31 10:11:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-01-31 10:11:26,061 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:11:26,061 INFO L351 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 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 10:11:26,061 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 10:11:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2115114335, now seen corresponding path program 24 times [2018-01-31 10:11:26,061 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:11:26,061 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:11:26,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:26,062 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:11:26,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:11:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:11:26,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:11:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:11:27,247 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:11:27,247 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 10:11:27,251 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:11:27,262 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,264 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,267 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,303 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,384 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,606 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,789 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:27,965 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:28,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:28,567 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:28,631 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:29,162 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:29,351 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:29,925 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:30,091 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:31,024 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:31,866 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:32,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-31 10:11:35,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:11:35,102 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:11:35,110 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:11:35,111 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-31 10:11:35,111 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 10:11:35,114 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 10:11:35,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:11:35 BasicIcfg [2018-01-31 10:11:35,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 10:11:35,114 INFO L168 Benchmark]: Toolchain (without parser) took 154782.60 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 328.5 MB in the end (delta: -214.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-01-31 10:11:35,115 INFO L168 Benchmark]: CDTParser took 0.09 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 10:11:35,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.39 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: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. [2018-01-31 10:11:35,115 INFO L168 Benchmark]: Boogie Preprocessor took 30.13 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-31 10:11:35,115 INFO L168 Benchmark]: RCFGBuilder took 459.29 ms. Allocated memory is still 148.9 MB. Free memory was 103.2 MB in the beginning and 83.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 5.3 GB. [2018-01-31 10:11:35,115 INFO L168 Benchmark]: IcfgTransformer took 90056.78 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 83.7 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 71.6 MB. Max. memory is 5.3 GB. [2018-01-31 10:11:35,115 INFO L168 Benchmark]: TraceAbstraction took 64115.58 ms. Allocated memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -10.5 MB). Free memory was 2.0 GB in the beginning and 328.5 MB in the end (delta: 1.7 GB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-01-31 10:11:35,116 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 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 118.39 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: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.13 ms. Allocated memory is still 148.9 MB. Free memory was 105.1 MB in the beginning and 103.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 459.29 ms. Allocated memory is still 148.9 MB. Free memory was 103.2 MB in the beginning and 83.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 5.3 GB. * IcfgTransformer took 90056.78 ms. Allocated memory was 148.9 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 83.7 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 71.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 64115.58 ms. Allocated memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -10.5 MB). Free memory was 2.0 GB in the beginning and 328.5 MB in the end (delta: 1.7 GB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 83 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 1545 LocStat_NO_SUPPORTING_DISEQUALITIES : 3816 LocStat_NO_DISJUNCTIONS : -166 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 109 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 166 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 107 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.007984 RENAME_VARIABLES(MILLISECONDS) : 0.209056 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.000442 PROJECTAWAY(MILLISECONDS) : 0.069159 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.042549 DISJOIN(MILLISECONDS) : 0.602583 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.223132 ADD_EQUALITY(MILLISECONDS) : 0.004127 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.002414 #CONJOIN_DISJUNCTIVE : 1910 #RENAME_VARIABLES : 4078 #UNFREEZE : 0 #CONJOIN : 2413 #PROJECTAWAY : 2320 #ADD_WEAK_EQUALITY : 14 #DISJOIN : 432 #RENAME_VARIABLES_DISJUNCTIVE : 4133 #ADD_EQUALITY : 171 #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] : 11 * 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 327 with TraceHistMax 26, 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, 84 locations, 1 error locations. TIMEOUT Result, 64.0s OverallTime, 27 OverallIterations, 26 TraceHistogramMax, 17.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2091 SDtfs, 2257 SDslu, 42320 SDs, 0 SdLazy, 4533 SolverSat, 563 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5933 GetRequests, 4434 SyntacticMatches, 0 SemanticMatches, 1499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24444 ImplicationChecksByTransitivity, 25.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=353occurred in iteration=26, 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, 26 MinimizatonAttempts, 180 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 20.0s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 9194 NumberOfCodeBlocks, 8978 NumberOfCodeBlocksAsserted, 182 NumberOfCheckSat, 9144 ConstructedInterpolants, 0 QuantifiedInterpolants, 4092902 SizeOfPredicates, 535 NumberOfNonLiveVariables, 6279 ConjunctsInSsa, 570 ConjunctsInUnsatCore, 50 InterpolantComputations, 3 PerfectInterpolantSequences, 14082/47168 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/max60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_10-11-35-121.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_10-11-35-121.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_10-11-35-121.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_10-11-35-121.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max60_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_10-11-35-121.csv Completed graceful shutdown