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/max20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 10:03:40,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 10:03:40,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 10:03:40,954 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 10:03:40,954 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 10:03:40,954 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 10:03:40,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 10:03:40,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 10:03:40,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 10:03:40,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 10:03:40,959 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 10:03:40,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 10:03:40,960 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 10:03:40,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 10:03:40,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 10:03:40,963 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 10:03:40,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 10:03:40,965 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 10:03:40,966 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 10:03:40,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 10:03:40,967 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 10:03:40,968 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 10:03:40,968 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 10:03:40,968 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 10:03:40,969 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 10:03:40,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 10:03:40,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 10:03:40,970 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 10:03:40,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 10:03:40,970 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 10:03:40,974 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 10:03:40,974 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 10:03:40,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 10:03:40,983 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 10:03:40,983 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 10:03:40,983 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 10:03:40,983 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 10:03:40,983 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 10:03:40,983 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 10:03:40,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 10:03:40,984 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 10:03:40,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 10:03:40,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 10:03:40,985 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 10:03:40,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 10:03:40,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 10:03:40,986 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 10:03:40,986 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 10:03:41,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 10:03:41,010 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 10:03:41,012 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 10:03:41,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 10:03:41,013 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 10:03:41,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max20_true-unreach-call.i [2018-01-31 10:03:41,077 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 10:03:41,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 10:03:41,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 10:03:41,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 10:03:41,081 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 10:03:41,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85ffdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41, skipping insertion in model container [2018-01-31 10:03:41,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,092 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:03:41,101 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:03:41,172 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:03:41,184 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:03:41,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41 WrapperNode [2018-01-31 10:03:41,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 10:03:41,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 10:03:41,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 10:03:41,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 10:03:41,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 10:03:41,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 10:03:41,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 10:03:41,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 10:03:41,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (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 10:03:41,264 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 10:03:41,265 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 10:03:41,265 INFO L136 BoogieDeclarations]: Found implementation of procedure max [2018-01-31 10:03:41,265 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 10:03:41,265 INFO L128 BoogieDeclarations]: Found specification of procedure max [2018-01-31 10:03:41,266 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 10:03:41,266 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 10:03:41,266 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 10:03:41,611 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 10:03:41,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:03:41 BoogieIcfgContainer [2018-01-31 10:03:41,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 10:03:41,612 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 10:03:41,612 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 10:03:41,613 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 10:03:41,614 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:03:41" (1/1) ... [2018-01-31 10:03:41,619 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 10:03:41,619 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 10:03:41,620 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 10:03:41,644 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 10:03:41,661 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 10:03:41,697 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 10:05:13,138 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 10:05:13,139 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 10:05:13,145 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 11 [2018-01-31 10:05:13,145 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 10:05:13,145 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 10:05:13,146 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 + 76, 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 10:05:13,168 INFO L547 PartitionManager]: partitioning result: [2018-01-31 10:05:13,168 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 10:05:13,168 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 10:05:13,168 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:05:13,168 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:05:13,168 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 10:05:13,168 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:05:13,168 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:05:13,169 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 10:05:13,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:05:13 BasicIcfg [2018-01-31 10:05:13,180 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 10:05:13,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 10:05:13,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 10:05:13,182 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 10:05:13,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:03:41" (1/4) ... [2018-01-31 10:05:13,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518570ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:05:13, skipping insertion in model container [2018-01-31 10:05:13,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:03:41" (2/4) ... [2018-01-31 10:05:13,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518570ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:05:13, skipping insertion in model container [2018-01-31 10:05:13,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:03:41" (3/4) ... [2018-01-31 10:05:13,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518570ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:05:13, skipping insertion in model container [2018-01-31 10:05:13,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:05:13" (4/4) ... [2018-01-31 10:05:13,184 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 10:05:13,189 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 10:05:13,194 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 10:05:13,214 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 10:05:13,214 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 10:05:13,214 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 10:05:13,214 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 10:05:13,214 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 10:05:13,214 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 10:05:13,215 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 10:05:13,215 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 10:05:13,215 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 10:05:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-01-31 10:05:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 10:05:13,226 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:13,226 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 10:05:13,227 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 10:05:13,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1993760935, now seen corresponding path program 1 times [2018-01-31 10:05:13,230 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:13,230 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:13,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:13,258 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:13,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:13,280 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:13,299 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 10:05:13,300 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:05:13,300 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 10:05:13,301 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 10:05:13,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 10:05:13,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:05:13,308 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 2 states. [2018-01-31 10:05:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:13,323 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2018-01-31 10:05:13,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 10:05:13,324 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-31 10:05:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:13,329 INFO L225 Difference]: With dead ends: 148 [2018-01-31 10:05:13,329 INFO L226 Difference]: Without dead ends: 77 [2018-01-31 10:05:13,331 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 10:05:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-31 10:05:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-01-31 10:05:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-31 10:05:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2018-01-31 10:05:13,355 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 36 [2018-01-31 10:05:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:13,355 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2018-01-31 10:05:13,355 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 10:05:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2018-01-31 10:05:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-31 10:05:13,357 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:13,357 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 10:05:13,357 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 10:05:13,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1996519795, now seen corresponding path program 1 times [2018-01-31 10:05:13,357 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:13,358 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:13,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:13,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:13,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:13,366 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:13,420 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 10:05:13,421 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:05:13,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 10:05:13,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 10:05:13,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 10:05:13,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 10:05:13,422 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 3 states. [2018-01-31 10:05:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:13,500 INFO L93 Difference]: Finished difference Result 141 states and 158 transitions. [2018-01-31 10:05:13,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 10:05:13,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-01-31 10:05:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:13,501 INFO L225 Difference]: With dead ends: 141 [2018-01-31 10:05:13,502 INFO L226 Difference]: Without dead ends: 84 [2018-01-31 10:05:13,502 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 10:05:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-31 10:05:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2018-01-31 10:05:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-31 10:05:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2018-01-31 10:05:13,506 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 38 [2018-01-31 10:05:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:13,507 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2018-01-31 10:05:13,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 10:05:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2018-01-31 10:05:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 10:05:13,508 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:13,508 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 10:05:13,508 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 10:05:13,508 INFO L82 PathProgramCache]: Analyzing trace with hash 603168805, now seen corresponding path program 1 times [2018-01-31 10:05:13,508 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:13,508 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:13,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:13,509 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:13,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:13,518 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:13,618 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 10:05:13,619 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:13,619 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 10:05:13,631 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:13,672 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:13,748 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 10:05:13,765 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 10:05:13,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 10:05:13,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 10:05:13,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 10:05:13,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 10:05:13,766 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 6 states. [2018-01-31 10:05:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:14,003 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2018-01-31 10:05:14,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 10:05:14,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-01-31 10:05:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:14,004 INFO L225 Difference]: With dead ends: 156 [2018-01-31 10:05:14,004 INFO L226 Difference]: Without dead ends: 99 [2018-01-31 10:05:14,004 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 10:05:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-31 10:05:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2018-01-31 10:05:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-31 10:05:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2018-01-31 10:05:14,009 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 46 [2018-01-31 10:05:14,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:14,009 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2018-01-31 10:05:14,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 10:05:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2018-01-31 10:05:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-31 10:05:14,010 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:14,010 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 10:05:14,010 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 10:05:14,010 INFO L82 PathProgramCache]: Analyzing trace with hash -40978709, now seen corresponding path program 1 times [2018-01-31 10:05:14,010 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:14,010 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:14,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:14,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:14,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:14,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:14,129 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 10:05:14,129 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:14,129 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 10:05:14,141 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:14,172 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:14,323 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 10:05:14,340 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:14,340 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 10:05:14,340 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 10:05:14,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 10:05:14,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 10:05:14,341 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 10 states. [2018-01-31 10:05:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:14,631 INFO L93 Difference]: Finished difference Result 174 states and 192 transitions. [2018-01-31 10:05:14,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 10:05:14,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-01-31 10:05:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:14,632 INFO L225 Difference]: With dead ends: 174 [2018-01-31 10:05:14,632 INFO L226 Difference]: Without dead ends: 115 [2018-01-31 10:05:14,633 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 10:05:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-01-31 10:05:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2018-01-31 10:05:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-31 10:05:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2018-01-31 10:05:14,638 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 62 [2018-01-31 10:05:14,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:14,639 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2018-01-31 10:05:14,639 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 10:05:14,639 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2018-01-31 10:05:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 10:05:14,640 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:14,640 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 10:05:14,640 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 10:05:14,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2138343503, now seen corresponding path program 2 times [2018-01-31 10:05:14,640 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:14,640 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:14,641 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:14,641 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:14,641 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:14,658 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:14,767 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 10:05:14,767 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:14,767 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 10:05:14,772 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:05:14,782 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:14,801 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:14,807 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:14,809 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:14,913 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 10:05:14,929 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:14,929 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 10:05:14,930 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 10:05:14,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 10:05:14,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 10:05:14,930 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 14 states. [2018-01-31 10:05:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:15,291 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2018-01-31 10:05:15,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 10:05:15,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-01-31 10:05:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:15,292 INFO L225 Difference]: With dead ends: 198 [2018-01-31 10:05:15,292 INFO L226 Difference]: Without dead ends: 131 [2018-01-31 10:05:15,293 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 10:05:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-31 10:05:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2018-01-31 10:05:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-31 10:05:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2018-01-31 10:05:15,303 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 78 [2018-01-31 10:05:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:15,303 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2018-01-31 10:05:15,303 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 10:05:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2018-01-31 10:05:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-31 10:05:15,305 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:15,305 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 10:05:15,305 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 10:05:15,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1073734263, now seen corresponding path program 3 times [2018-01-31 10:05:15,305 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:15,305 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:15,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:15,306 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:15,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:15,333 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:15,446 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 10:05:15,446 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:15,446 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 10:05:15,451 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:05:15,464 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:15,470 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:15,482 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:15,490 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:15,491 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:15,493 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:15,578 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 10:05:15,595 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:15,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-31 10:05:15,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 10:05:15,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 10:05:15,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-31 10:05:15,596 INFO L87 Difference]: Start difference. First operand 121 states and 130 transitions. Second operand 18 states. [2018-01-31 10:05:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:15,854 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2018-01-31 10:05:15,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 10:05:15,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-01-31 10:05:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:15,855 INFO L225 Difference]: With dead ends: 222 [2018-01-31 10:05:15,855 INFO L226 Difference]: Without dead ends: 147 [2018-01-31 10:05:15,855 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 10:05:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-31 10:05:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2018-01-31 10:05:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-01-31 10:05:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2018-01-31 10:05:15,860 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 94 [2018-01-31 10:05:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:15,860 INFO L432 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2018-01-31 10:05:15,860 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 10:05:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2018-01-31 10:05:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-31 10:05:15,861 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:15,861 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 10:05:15,861 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 10:05:15,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1727924419, now seen corresponding path program 4 times [2018-01-31 10:05:15,861 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:15,861 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:15,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:15,862 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:15,862 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:15,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:16,015 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 10:05:16,016 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:16,016 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 10:05:16,021 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:05:16,040 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:16,041 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:16,063 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 10:05:16,080 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:16,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 10:05:16,081 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 10:05:16,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 10:05:16,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 10:05:16,081 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand 15 states. [2018-01-31 10:05:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:16,197 INFO L93 Difference]: Finished difference Result 233 states and 250 transitions. [2018-01-31 10:05:16,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 10:05:16,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2018-01-31 10:05:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:16,198 INFO L225 Difference]: With dead ends: 233 [2018-01-31 10:05:16,198 INFO L226 Difference]: Without dead ends: 150 [2018-01-31 10:05:16,199 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 10:05:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-31 10:05:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2018-01-31 10:05:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-31 10:05:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2018-01-31 10:05:16,204 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 110 [2018-01-31 10:05:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:16,204 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2018-01-31 10:05:16,204 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 10:05:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2018-01-31 10:05:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-31 10:05:16,205 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:16,205 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 10:05:16,205 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 10:05:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1198114603, now seen corresponding path program 5 times [2018-01-31 10:05:16,205 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:16,205 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:16,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:16,206 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:16,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:16,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:16,368 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 10:05:16,369 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:16,369 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 10:05:16,374 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:05:16,380 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,387 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,406 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,454 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:16,460 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:16,462 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:16,628 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 10:05:16,645 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:16,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 10:05:16,645 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 10:05:16,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 10:05:16,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 10:05:16,646 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 24 states. [2018-01-31 10:05:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:17,020 INFO L93 Difference]: Finished difference Result 254 states and 272 transitions. [2018-01-31 10:05:17,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 10:05:17,024 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2018-01-31 10:05:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:17,024 INFO L225 Difference]: With dead ends: 254 [2018-01-31 10:05:17,024 INFO L226 Difference]: Without dead ends: 171 [2018-01-31 10:05:17,025 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 10:05:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-31 10:05:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-01-31 10:05:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-31 10:05:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2018-01-31 10:05:17,032 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 118 [2018-01-31 10:05:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:17,032 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2018-01-31 10:05:17,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 10:05:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2018-01-31 10:05:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-31 10:05:17,033 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:17,033 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 10:05:17,034 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 10:05:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash 813025179, now seen corresponding path program 6 times [2018-01-31 10:05:17,034 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:17,034 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:17,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:17,034 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:17,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:17,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:17,283 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 10:05:17,283 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:17,283 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 10:05:17,288 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:05:17,300 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,302 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,304 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,307 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,320 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,329 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,336 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:17,337 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:17,339 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:17,531 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 10:05:17,551 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:17,551 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2018-01-31 10:05:17,552 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 10:05:17,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 10:05:17,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-31 10:05:17,552 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 28 states. [2018-01-31 10:05:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:18,194 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2018-01-31 10:05:18,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 10:05:18,195 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-31 10:05:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:18,196 INFO L225 Difference]: With dead ends: 278 [2018-01-31 10:05:18,196 INFO L226 Difference]: Without dead ends: 187 [2018-01-31 10:05:18,196 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 10:05:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-31 10:05:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2018-01-31 10:05:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-31 10:05:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 186 transitions. [2018-01-31 10:05:18,201 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 186 transitions. Word has length 134 [2018-01-31 10:05:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:18,201 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 186 transitions. [2018-01-31 10:05:18,201 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 10:05:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 186 transitions. [2018-01-31 10:05:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-31 10:05:18,202 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:18,202 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 10:05:18,202 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 10:05:18,202 INFO L82 PathProgramCache]: Analyzing trace with hash -865140639, now seen corresponding path program 7 times [2018-01-31 10:05:18,202 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:18,202 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:18,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:18,203 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:18,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:18,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:18,369 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 10:05:18,370 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:18,370 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 10:05:18,375 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:18,395 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:18,418 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 10:05:18,435 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:18,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 10:05:18,436 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 10:05:18,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 10:05:18,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 10:05:18,436 INFO L87 Difference]: Start difference. First operand 177 states and 186 transitions. Second operand 21 states. [2018-01-31 10:05:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:18,664 INFO L93 Difference]: Finished difference Result 289 states and 306 transitions. [2018-01-31 10:05:18,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 10:05:18,665 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2018-01-31 10:05:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:18,665 INFO L225 Difference]: With dead ends: 289 [2018-01-31 10:05:18,665 INFO L226 Difference]: Without dead ends: 190 [2018-01-31 10:05:18,666 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 10:05:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-31 10:05:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 185. [2018-01-31 10:05:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-31 10:05:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 194 transitions. [2018-01-31 10:05:18,669 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 194 transitions. Word has length 150 [2018-01-31 10:05:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:18,669 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 194 transitions. [2018-01-31 10:05:18,669 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 10:05:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 194 transitions. [2018-01-31 10:05:18,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-31 10:05:18,670 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:18,670 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 10:05:18,670 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 10:05:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash -234370567, now seen corresponding path program 8 times [2018-01-31 10:05:18,670 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:18,670 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:18,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:18,671 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:18,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:18,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:18,866 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 10:05:18,866 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:18,866 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 10:05:18,874 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:05:18,883 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:18,892 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:18,894 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:18,895 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:18,922 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 10:05:18,939 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:18,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 10:05:18,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 10:05:18,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 10:05:18,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 10:05:18,940 INFO L87 Difference]: Start difference. First operand 185 states and 194 transitions. Second operand 23 states. [2018-01-31 10:05:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:19,162 INFO L93 Difference]: Finished difference Result 297 states and 314 transitions. [2018-01-31 10:05:19,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 10:05:19,166 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2018-01-31 10:05:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:19,167 INFO L225 Difference]: With dead ends: 297 [2018-01-31 10:05:19,167 INFO L226 Difference]: Without dead ends: 198 [2018-01-31 10:05:19,168 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:05:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-31 10:05:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2018-01-31 10:05:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-31 10:05:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 202 transitions. [2018-01-31 10:05:19,171 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 202 transitions. Word has length 158 [2018-01-31 10:05:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:19,171 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 202 transitions. [2018-01-31 10:05:19,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 10:05:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 202 transitions. [2018-01-31 10:05:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-31 10:05:19,172 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:19,172 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 10:05:19,172 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 10:05:19,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1016497263, now seen corresponding path program 9 times [2018-01-31 10:05:19,172 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:19,172 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:19,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:19,173 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:19,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:19,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:19,377 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 10:05:19,378 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:19,378 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:05:19,382 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:05:19,390 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,392 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,396 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,410 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,423 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,466 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,597 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:19,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:19,600 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:19,801 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 10:05:19,820 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:19,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2018-01-31 10:05:19,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 10:05:19,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 10:05:19,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 10:05:19,821 INFO L87 Difference]: Start difference. First operand 193 states and 202 transitions. Second operand 36 states. [2018-01-31 10:05:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:20,675 INFO L93 Difference]: Finished difference Result 318 states and 336 transitions. [2018-01-31 10:05:20,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 10:05:20,675 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2018-01-31 10:05:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:20,676 INFO L225 Difference]: With dead ends: 318 [2018-01-31 10:05:20,676 INFO L226 Difference]: Without dead ends: 219 [2018-01-31 10:05:20,677 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 10:05:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-31 10:05:20,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 209. [2018-01-31 10:05:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-01-31 10:05:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 218 transitions. [2018-01-31 10:05:20,680 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 218 transitions. Word has length 166 [2018-01-31 10:05:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:20,680 INFO L432 AbstractCegarLoop]: Abstraction has 209 states and 218 transitions. [2018-01-31 10:05:20,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 10:05:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 218 transitions. [2018-01-31 10:05:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-31 10:05:20,691 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:20,691 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 10:05:20,691 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 10:05:20,692 INFO L82 PathProgramCache]: Analyzing trace with hash 135659095, now seen corresponding path program 10 times [2018-01-31 10:05:20,692 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:20,692 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:20,692 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:20,692 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:20,692 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:20,712 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:21,034 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 10:05:21,034 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:21,034 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 10:05:21,039 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:05:21,111 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:21,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:21,157 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 10:05:21,174 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:21,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 10:05:21,175 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 10:05:21,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 10:05:21,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 10:05:21,175 INFO L87 Difference]: Start difference. First operand 209 states and 218 transitions. Second operand 27 states. [2018-01-31 10:05:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:21,718 INFO L93 Difference]: Finished difference Result 329 states and 346 transitions. [2018-01-31 10:05:21,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 10:05:21,724 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2018-01-31 10:05:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:21,725 INFO L225 Difference]: With dead ends: 329 [2018-01-31 10:05:21,725 INFO L226 Difference]: Without dead ends: 222 [2018-01-31 10:05:21,725 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 10:05:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-31 10:05:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 217. [2018-01-31 10:05:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-31 10:05:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 226 transitions. [2018-01-31 10:05:21,730 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 226 transitions. Word has length 182 [2018-01-31 10:05:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:21,730 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 226 transitions. [2018-01-31 10:05:21,731 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 10:05:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 226 transitions. [2018-01-31 10:05:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-31 10:05:21,731 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:21,731 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 10:05:21,731 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 10:05:21,731 INFO L82 PathProgramCache]: Analyzing trace with hash -396204049, now seen corresponding path program 11 times [2018-01-31 10:05:21,732 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:21,732 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:21,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:21,732 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:21,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:21,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:22,053 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 10:05:22,054 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:22,054 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 10:05:22,077 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:05:22,084 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,085 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,086 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,087 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,089 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,092 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,143 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,159 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,167 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,189 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,214 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:22,227 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:22,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:22,274 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 10:05:22,291 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:22,291 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 10:05:22,292 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:05:22,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:05:22,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:05:22,292 INFO L87 Difference]: Start difference. First operand 217 states and 226 transitions. Second operand 29 states. [2018-01-31 10:05:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:22,932 INFO L93 Difference]: Finished difference Result 337 states and 354 transitions. [2018-01-31 10:05:22,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 10:05:22,932 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-01-31 10:05:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:22,933 INFO L225 Difference]: With dead ends: 337 [2018-01-31 10:05:22,933 INFO L226 Difference]: Without dead ends: 230 [2018-01-31 10:05:22,934 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:05:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-31 10:05:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2018-01-31 10:05:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-01-31 10:05:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 234 transitions. [2018-01-31 10:05:22,939 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 234 transitions. Word has length 190 [2018-01-31 10:05:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:22,939 INFO L432 AbstractCegarLoop]: Abstraction has 225 states and 234 transitions. [2018-01-31 10:05:22,939 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:05:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 234 transitions. [2018-01-31 10:05:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-31 10:05:22,940 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:22,940 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 10:05:22,940 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 10:05:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash -690505337, now seen corresponding path program 12 times [2018-01-31 10:05:22,940 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:22,940 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:22,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:22,941 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:22,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:22,971 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:23,386 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 10:05:23,387 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:23,387 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 10:05:23,392 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:05:23,403 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,405 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,407 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,412 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,420 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,555 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,590 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,595 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,603 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,644 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,729 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:23,864 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:23,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:23,932 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 10:05:23,951 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:23,951 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 10:05:23,951 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 10:05:23,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 10:05:23,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 10:05:23,952 INFO L87 Difference]: Start difference. First operand 225 states and 234 transitions. Second operand 31 states. [2018-01-31 10:05:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:24,471 INFO L93 Difference]: Finished difference Result 345 states and 362 transitions. [2018-01-31 10:05:24,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 10:05:24,472 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-31 10:05:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:24,473 INFO L225 Difference]: With dead ends: 345 [2018-01-31 10:05:24,473 INFO L226 Difference]: Without dead ends: 238 [2018-01-31 10:05:24,474 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:05:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-31 10:05:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2018-01-31 10:05:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-31 10:05:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 242 transitions. [2018-01-31 10:05:24,479 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 242 transitions. Word has length 198 [2018-01-31 10:05:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:24,479 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 242 transitions. [2018-01-31 10:05:24,479 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 10:05:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 242 transitions. [2018-01-31 10:05:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-31 10:05:24,480 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:24,480 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 10:05:24,480 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 10:05:24,480 INFO L82 PathProgramCache]: Analyzing trace with hash 806220575, now seen corresponding path program 13 times [2018-01-31 10:05:24,480 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:24,481 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:24,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:24,481 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:24,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:24,493 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:25,588 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 10:05:25,588 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:25,588 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 10:05:25,598 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:25,622 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:25,665 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 10:05:25,682 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:25,682 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 10:05:25,682 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:05:25,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:05:25,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:05:25,683 INFO L87 Difference]: Start difference. First operand 233 states and 242 transitions. Second operand 33 states. [2018-01-31 10:05:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:26,081 INFO L93 Difference]: Finished difference Result 353 states and 370 transitions. [2018-01-31 10:05:26,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 10:05:26,094 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2018-01-31 10:05:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:26,095 INFO L225 Difference]: With dead ends: 353 [2018-01-31 10:05:26,095 INFO L226 Difference]: Without dead ends: 246 [2018-01-31 10:05:26,096 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 10:05:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-31 10:05:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 241. [2018-01-31 10:05:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-01-31 10:05:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 250 transitions. [2018-01-31 10:05:26,099 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 250 transitions. Word has length 206 [2018-01-31 10:05:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:26,099 INFO L432 AbstractCegarLoop]: Abstraction has 241 states and 250 transitions. [2018-01-31 10:05:26,099 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:05:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 250 transitions. [2018-01-31 10:05:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-31 10:05:26,100 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:26,100 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 10:05:26,100 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 10:05:26,100 INFO L82 PathProgramCache]: Analyzing trace with hash 949818551, now seen corresponding path program 14 times [2018-01-31 10:05:26,100 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:26,100 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:26,101 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:26,101 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:26,101 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:26,112 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:26,874 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 10:05:26,874 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:26,874 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 10:05:26,878 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:05:26,888 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:26,899 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:26,901 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:26,903 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:26,943 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 10:05:26,961 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:26,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 10:05:26,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 10:05:26,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 10:05:26,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 10:05:26,962 INFO L87 Difference]: Start difference. First operand 241 states and 250 transitions. Second operand 35 states. [2018-01-31 10:05:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:27,395 INFO L93 Difference]: Finished difference Result 361 states and 378 transitions. [2018-01-31 10:05:27,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 10:05:27,395 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 214 [2018-01-31 10:05:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:27,396 INFO L225 Difference]: With dead ends: 361 [2018-01-31 10:05:27,396 INFO L226 Difference]: Without dead ends: 254 [2018-01-31 10:05:27,397 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 10:05:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-31 10:05:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2018-01-31 10:05:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-01-31 10:05:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 258 transitions. [2018-01-31 10:05:27,400 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 258 transitions. Word has length 214 [2018-01-31 10:05:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:27,400 INFO L432 AbstractCegarLoop]: Abstraction has 249 states and 258 transitions. [2018-01-31 10:05:27,400 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 10:05:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 258 transitions. [2018-01-31 10:05:27,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-31 10:05:27,401 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:27,401 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 10:05:27,401 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 10:05:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash 488447567, now seen corresponding path program 15 times [2018-01-31 10:05:27,401 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:27,401 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:27,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:27,401 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:27,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:27,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:30,170 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 10:05:30,170 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:30,170 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 10:05:30,175 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:05:30,184 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,187 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,189 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,195 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,204 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,264 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,315 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,462 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:30,463 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:30,466 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:30,741 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 10:05:30,759 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:30,759 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2018-01-31 10:05:30,759 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 10:05:30,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 10:05:30,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 10:05:30,760 INFO L87 Difference]: Start difference. First operand 249 states and 258 transitions. Second operand 50 states. [2018-01-31 10:05:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:31,840 INFO L93 Difference]: Finished difference Result 382 states and 400 transitions. [2018-01-31 10:05:31,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 10:05:31,840 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 222 [2018-01-31 10:05:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:31,841 INFO L225 Difference]: With dead ends: 382 [2018-01-31 10:05:31,841 INFO L226 Difference]: Without dead ends: 275 [2018-01-31 10:05:31,843 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 10:05:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-01-31 10:05:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 265. [2018-01-31 10:05:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-01-31 10:05:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 274 transitions. [2018-01-31 10:05:31,846 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 274 transitions. Word has length 222 [2018-01-31 10:05:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:31,846 INFO L432 AbstractCegarLoop]: Abstraction has 265 states and 274 transitions. [2018-01-31 10:05:31,846 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 10:05:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 274 transitions. [2018-01-31 10:05:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-31 10:05:31,847 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:31,847 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 10:05:31,847 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 10:05:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash -750757099, now seen corresponding path program 16 times [2018-01-31 10:05:31,847 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:31,847 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:31,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:31,848 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:31,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:31,857 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:32,485 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 10:05:32,486 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:32,486 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 10:05:32,490 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:05:32,609 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:32,612 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:32,665 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 10:05:32,682 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:32,682 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 10:05:32,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 10:05:32,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 10:05:32,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 10:05:32,684 INFO L87 Difference]: Start difference. First operand 265 states and 274 transitions. Second operand 39 states. [2018-01-31 10:05:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:33,247 INFO L93 Difference]: Finished difference Result 393 states and 410 transitions. [2018-01-31 10:05:33,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 10:05:33,248 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 238 [2018-01-31 10:05:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:33,249 INFO L225 Difference]: With dead ends: 393 [2018-01-31 10:05:33,249 INFO L226 Difference]: Without dead ends: 278 [2018-01-31 10:05:33,250 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 10:05:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-01-31 10:05:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2018-01-31 10:05:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-01-31 10:05:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 282 transitions. [2018-01-31 10:05:33,253 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 282 transitions. Word has length 238 [2018-01-31 10:05:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:33,253 INFO L432 AbstractCegarLoop]: Abstraction has 273 states and 282 transitions. [2018-01-31 10:05:33,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 10:05:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 282 transitions. [2018-01-31 10:05:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-31 10:05:33,262 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:33,262 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 10:05:33,262 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 10:05:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1730354349, now seen corresponding path program 17 times [2018-01-31 10:05:33,262 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:33,262 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:33,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:33,263 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:33,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:33,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:33,894 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 10:05:33,894 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:33,894 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 10:05:33,899 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:05:33,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,908 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,909 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,918 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,920 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,923 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,926 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,934 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:33,951 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:34,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:34,100 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:34,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:34,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:34,760 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:35,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:35,888 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:35,893 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:36,804 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 10:05:36,822 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:36,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 56 [2018-01-31 10:05:36,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-31 10:05:36,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-31 10:05:36,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 10:05:36,824 INFO L87 Difference]: Start difference. First operand 273 states and 282 transitions. Second operand 56 states. [2018-01-31 10:05:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:38,166 INFO L93 Difference]: Finished difference Result 414 states and 432 transitions. [2018-01-31 10:05:38,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 10:05:38,166 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 246 [2018-01-31 10:05:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:38,167 INFO L225 Difference]: With dead ends: 414 [2018-01-31 10:05:38,167 INFO L226 Difference]: Without dead ends: 299 [2018-01-31 10:05:38,168 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2205, Invalid=9351, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 10:05:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-01-31 10:05:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2018-01-31 10:05:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-01-31 10:05:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 298 transitions. [2018-01-31 10:05:38,171 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 298 transitions. Word has length 246 [2018-01-31 10:05:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:38,171 INFO L432 AbstractCegarLoop]: Abstraction has 289 states and 298 transitions. [2018-01-31 10:05:38,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-31 10:05:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 298 transitions. [2018-01-31 10:05:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-31 10:05:38,172 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:38,172 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 10:05:38,172 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 10:05:38,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1652282227, now seen corresponding path program 18 times [2018-01-31 10:05:38,172 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:38,172 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:38,172 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:38,173 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:38,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:38,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:38,767 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 10:05:38,767 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:38,767 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 10:05:38,772 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:05:38,790 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,792 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,794 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,799 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,804 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,821 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,837 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:38,979 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:39,036 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:39,077 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:39,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:39,187 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:39,343 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:40,066 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:40,445 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:41,149 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:41,633 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:42,318 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:42,706 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:05:42,712 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:42,719 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:43,178 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 10:05:43,196 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:43,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21] total 60 [2018-01-31 10:05:43,197 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-31 10:05:43,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-31 10:05:43,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2018-01-31 10:05:43,197 INFO L87 Difference]: Start difference. First operand 289 states and 298 transitions. Second operand 60 states. [2018-01-31 10:05:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:44,617 INFO L93 Difference]: Finished difference Result 433 states and 451 transitions. [2018-01-31 10:05:44,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 10:05:44,617 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 262 [2018-01-31 10:05:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:44,618 INFO L225 Difference]: With dead ends: 433 [2018-01-31 10:05:44,619 INFO L226 Difference]: Without dead ends: 310 [2018-01-31 10:05:44,620 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2495, Invalid=10845, Unknown=0, NotChecked=0, Total=13340 [2018-01-31 10:05:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-01-31 10:05:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2018-01-31 10:05:44,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-01-31 10:05:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 314 transitions. [2018-01-31 10:05:44,628 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 314 transitions. Word has length 262 [2018-01-31 10:05:44,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:44,629 INFO L432 AbstractCegarLoop]: Abstraction has 305 states and 314 transitions. [2018-01-31 10:05:44,629 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-31 10:05:44,629 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 314 transitions. [2018-01-31 10:05:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-01-31 10:05:44,630 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:44,630 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 10:05:44,630 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 10:05:44,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1028011065, now seen corresponding path program 19 times [2018-01-31 10:05:44,630 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:44,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:44,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:44,640 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:44,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:44,665 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:46,771 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:46,771 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 10:05:46,775 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:46,803 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:47,207 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:47,208 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-31 10:05:47,208 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 10:05:47,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 10:05:47,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-31 10:05:47,208 INFO L87 Difference]: Start difference. First operand 305 states and 314 transitions. Second operand 25 states. [2018-01-31 10:05:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:48,012 INFO L93 Difference]: Finished difference Result 348 states and 360 transitions. [2018-01-31 10:05:48,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-31 10:05:48,013 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 278 [2018-01-31 10:05:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:48,014 INFO L225 Difference]: With dead ends: 348 [2018-01-31 10:05:48,014 INFO L226 Difference]: Without dead ends: 318 [2018-01-31 10:05:48,014 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 10:05:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-01-31 10:05:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 313. [2018-01-31 10:05:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-01-31 10:05:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 322 transitions. [2018-01-31 10:05:48,017 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 322 transitions. Word has length 278 [2018-01-31 10:05:48,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:48,018 INFO L432 AbstractCegarLoop]: Abstraction has 313 states and 322 transitions. [2018-01-31 10:05:48,018 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 10:05:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 322 transitions. [2018-01-31 10:05:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-31 10:05:48,019 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:48,019 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:05:48,019 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 10:05:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash 468192615, now seen corresponding path program 20 times [2018-01-31 10:05:48,019 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:48,019 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:48,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:48,020 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:05:48,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:48,030 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:48,646 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:48,646 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 10:05:48,650 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:05:48,661 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:48,688 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:48,700 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:48,703 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2022 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:48,800 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:48,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 10:05:48,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 10:05:48,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 10:05:48,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 10:05:48,801 INFO L87 Difference]: Start difference. First operand 313 states and 322 transitions. Second operand 27 states. [2018-01-31 10:05:49,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:49,084 INFO L93 Difference]: Finished difference Result 356 states and 368 transitions. [2018-01-31 10:05:49,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 10:05:49,085 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 286 [2018-01-31 10:05:49,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:49,086 INFO L225 Difference]: With dead ends: 356 [2018-01-31 10:05:49,086 INFO L226 Difference]: Without dead ends: 326 [2018-01-31 10:05:49,086 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 10:05:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-01-31 10:05:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2018-01-31 10:05:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-01-31 10:05:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 330 transitions. [2018-01-31 10:05:49,092 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 330 transitions. Word has length 286 [2018-01-31 10:05:49,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:49,093 INFO L432 AbstractCegarLoop]: Abstraction has 321 states and 330 transitions. [2018-01-31 10:05:49,093 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 10:05:49,093 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 330 transitions. [2018-01-31 10:05:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-31 10:05:49,094 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:49,094 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:05:49,094 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 10:05:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1877792917, now seen corresponding path program 21 times [2018-01-31 10:05:49,094 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:49,094 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:49,094 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:49,095 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:49,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:49,107 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:49,742 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:49,742 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 10:05:49,746 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:05:49,756 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,768 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,782 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,795 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,825 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,848 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:49,921 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:50,027 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:50,201 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:50,322 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:50,467 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:05:50,473 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:50,476 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:50,566 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:50,566 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 10:05:50,566 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:05:50,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:05:50,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:05:50,567 INFO L87 Difference]: Start difference. First operand 321 states and 330 transitions. Second operand 29 states. [2018-01-31 10:05:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:50,872 INFO L93 Difference]: Finished difference Result 364 states and 376 transitions. [2018-01-31 10:05:50,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 10:05:50,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 294 [2018-01-31 10:05:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:50,873 INFO L225 Difference]: With dead ends: 364 [2018-01-31 10:05:50,874 INFO L226 Difference]: Without dead ends: 334 [2018-01-31 10:05:50,874 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:05:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-31 10:05:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 329. [2018-01-31 10:05:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-01-31 10:05:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 338 transitions. [2018-01-31 10:05:50,877 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 338 transitions. Word has length 294 [2018-01-31 10:05:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:50,877 INFO L432 AbstractCegarLoop]: Abstraction has 329 states and 338 transitions. [2018-01-31 10:05:50,877 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:05:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 338 transitions. [2018-01-31 10:05:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-01-31 10:05:50,878 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:50,878 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:05:50,878 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 10:05:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1749194179, now seen corresponding path program 22 times [2018-01-31 10:05:50,878 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:50,878 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:50,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:50,879 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:50,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:50,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:51,976 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:51,976 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 10:05:51,991 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:05:52,543 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:05:52,547 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:05:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:52,646 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:05:52,646 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 10:05:52,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 10:05:52,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 10:05:52,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 10:05:52,647 INFO L87 Difference]: Start difference. First operand 329 states and 338 transitions. Second operand 31 states. [2018-01-31 10:05:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:05:53,026 INFO L93 Difference]: Finished difference Result 372 states and 384 transitions. [2018-01-31 10:05:53,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 10:05:53,026 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 302 [2018-01-31 10:05:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:05:53,027 INFO L225 Difference]: With dead ends: 372 [2018-01-31 10:05:53,027 INFO L226 Difference]: Without dead ends: 342 [2018-01-31 10:05:53,028 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:05:53,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-31 10:05:53,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 337. [2018-01-31 10:05:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-31 10:05:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 346 transitions. [2018-01-31 10:05:53,031 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 346 transitions. Word has length 302 [2018-01-31 10:05:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:05:53,031 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 346 transitions. [2018-01-31 10:05:53,031 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 10:05:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 346 transitions. [2018-01-31 10:05:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-31 10:05:53,032 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:05:53,032 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:05:53,032 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 10:05:53,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1708606705, now seen corresponding path program 23 times [2018-01-31 10:05:53,032 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:05:53,032 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:05:53,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:53,033 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:05:53,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:05:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:05:53,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:05:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:05:53,533 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:05:53,533 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 10:05:53,538 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:05:53,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,549 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,550 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,551 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,554 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,555 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,559 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,563 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,574 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,599 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:53,985 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:54,136 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:54,715 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:55,068 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:55,676 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:56,356 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:05:58,191 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:06:01,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:06:03,402 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:06:03,408 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:06:03,417 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:06:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:06:03,534 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:06:03,534 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 10:06:03,535 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:06:03,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:06:03,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:06:03,535 INFO L87 Difference]: Start difference. First operand 337 states and 346 transitions. Second operand 33 states. [2018-01-31 10:06:03,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:06:03,930 INFO L93 Difference]: Finished difference Result 380 states and 392 transitions. [2018-01-31 10:06:03,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 10:06:03,930 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 310 [2018-01-31 10:06:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:06:03,931 INFO L225 Difference]: With dead ends: 380 [2018-01-31 10:06:03,931 INFO L226 Difference]: Without dead ends: 350 [2018-01-31 10:06:03,932 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 10:06:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-01-31 10:06:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2018-01-31 10:06:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-01-31 10:06:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 354 transitions. [2018-01-31 10:06:03,935 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 354 transitions. Word has length 310 [2018-01-31 10:06:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:06:03,935 INFO L432 AbstractCegarLoop]: Abstraction has 345 states and 354 transitions. [2018-01-31 10:06:03,935 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:06:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 354 transitions. [2018-01-31 10:06:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-31 10:06:03,936 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:06:03,936 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:06:03,936 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 10:06:03,936 INFO L82 PathProgramCache]: Analyzing trace with hash -73865697, now seen corresponding path program 24 times [2018-01-31 10:06:03,936 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:06:03,936 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:06:03,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:06:03,937 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:06:03,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:06:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:06:03,946 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:06:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2430 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-01-31 10:06:04,480 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:06:04,480 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 10:06:04,485 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:06:04,496 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,507 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,511 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,522 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,540 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:04,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:05,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:05,574 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:06,075 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:07,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:09,962 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:11,266 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-31 10:06:12,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:14,420 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:06:15,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown