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/avg40_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 09:54:45,971 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:54:45,972 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:54:45,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:54:45,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:54:45,984 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:54:45,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:54:45,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:54:45,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:54:45,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:54:45,987 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:54:45,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:54:45,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:54:45,988 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:54:45,989 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:54:45,990 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:54:45,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:54:45,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:54:45,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:54:45,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:54:45,996 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:54:45,996 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:54:45,996 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:54:45,997 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:54:46,003 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:54:46,004 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:54:46,004 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:54:46,004 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:54:46,005 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:54:46,005 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:54:46,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:54:46,005 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 09:54:46,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:54:46,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:54:46,011 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:54:46,011 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:54:46,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:54:46,011 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:54:46,011 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:54:46,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 09:54:46,012 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 09:54:46,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:54:46,013 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:54:46,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:54:46,014 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:54:46,014 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:54:46,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:54:46,014 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:54:46,014 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:54:46,014 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:54:46,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:54:46,039 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:54:46,041 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:54:46,042 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:54:46,042 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:54:46,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg40_true-unreach-call.i [2018-01-31 09:54:46,108 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:54:46,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 09:54:46,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:54:46,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:54:46,113 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:54:46,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3bf5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46, skipping insertion in model container [2018-01-31 09:54:46,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,125 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:54:46,133 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:54:46,223 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:54:46,238 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:54:46,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46 WrapperNode [2018-01-31 09:54:46,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:54:46,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:54:46,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:54:46,247 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:54:46,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:54:46,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:54:46,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:54:46,266 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:54:46,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:54:46,309 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:54:46,309 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:54:46,309 INFO L136 BoogieDeclarations]: Found implementation of procedure avg [2018-01-31 09:54:46,309 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:54:46,309 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:54:46,309 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure avg [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:54:46,310 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:54:46,678 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:54:46,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:54:46 BoogieIcfgContainer [2018-01-31 09:54:46,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:54:46,679 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 09:54:46,679 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 09:54:46,679 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 09:54:46,681 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:54:46" (1/1) ... [2018-01-31 09:54:46,686 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 09:54:46,686 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 09:54:46,686 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 09:54:46,710 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 09:54:46,728 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 09:54:46,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 09:56:14,241 INFO L314 AbstractInterpreter]: Visited 91 different actions 690 times. Merged at 63 different actions 327 times. Widened at 1 different actions 1 times. Found 48 fixpoints after 13 different actions. Largest state had 68 variables. [2018-01-31 09:56:14,242 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 09:56:14,248 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 10 [2018-01-31 09:56:14,248 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 09:56:14,248 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 09:56:14,248 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_11| |v_main_~#x~5.base_7|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29'''''')) ((select (select |v_#memory_int_1| v_avg_~x.base_2) (+ v_avg_~x.offset_2 (* 4 v_avg_~i~3_5))), at (SUMMARY for call #t~mem1 := read~int(~x.base, ~x.offset + ~i~3 * 4, 4); srcloc: L10)) ((select (select |v_#memory_int_12| |v_main_~#x~5.base_9|) |v_main_~#x~5.offset_9|), at (SUMMARY for call #t~mem11 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L31)) ((select (select |v_#memory_int_13| |v_main_~#x~5.base_10|) (+ (* 4 v_main_~i~7_4) |v_main_~#x~5.offset_10| 4)), at (SUMMARY for call #t~mem14 := read~int(~#x~5.base, ~#x~5.offset + (~i~7 + 1) * 4, 4); srcloc: L33)) ((select (select |v_#memory_int_7| |v_main_~#x~5.base_5|) (+ |v_main_~#x~5.offset_5| 4)), at (SUMMARY for call #t~mem8 := read~int(~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29''')) ((select |v_#memory_int_15| |v_main_~#x~5.base_11|), at (SUMMARY for call write~int(#t~mem14, ~#x~5.base, ~#x~5.offset + ~i~7 * 4, 4); srcloc: L33')) ((select |v_#memory_int_9| |v_main_~#x~5.base_6|), at (SUMMARY for call write~int(#t~mem8, ~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29'''')) ((select |v_#memory_int_17| |v_main_~#x~5.base_12|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 156, 4); srcloc: L32''''''')) ((select |v_#memory_int_5| |v_main_~#x~5.base_2|), at (SUMMARY for call write~int(#t~nondet3, ~#x~5.base, ~#x~5.offset + ~i~6 * 4, 4); srcloc: L24')) ((select (select |v_#memory_int_6| |v_main_~#x~5.base_4|) |v_main_~#x~5.offset_4|), at (SUMMARY for call #t~mem6 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29)) [2018-01-31 09:56:14,265 INFO L547 PartitionManager]: partitioning result: [2018-01-31 09:56:14,265 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 09:56:14,265 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 09:56:14,265 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 09:56:14,266 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:56:14,266 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 09:56:14,266 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 09:56:14,266 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:56:14,266 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 09:56:14,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:56:14 BasicIcfg [2018-01-31 09:56:14,276 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 09:56:14,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:56:14,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:56:14,278 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:56:14,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:54:46" (1/4) ... [2018-01-31 09:56:14,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54697a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:56:14, skipping insertion in model container [2018-01-31 09:56:14,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:54:46" (2/4) ... [2018-01-31 09:56:14,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54697a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:56:14, skipping insertion in model container [2018-01-31 09:56:14,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:54:46" (3/4) ... [2018-01-31 09:56:14,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54697a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:56:14, skipping insertion in model container [2018-01-31 09:56:14,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:56:14" (4/4) ... [2018-01-31 09:56:14,280 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 09:56:14,285 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:56:14,290 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 09:56:14,310 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:56:14,310 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:56:14,310 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:56:14,310 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:56:14,310 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:56:14,311 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:56:14,311 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:56:14,311 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:56:14,311 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:56:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 09:56:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 09:56:14,321 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:14,322 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:14,322 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 09:56:14,324 INFO L82 PathProgramCache]: Analyzing trace with hash 119124891, now seen corresponding path program 1 times [2018-01-31 09:56:14,325 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:14,326 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:14,353 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:14,354 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:14,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:14,374 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:56:14,394 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:56:14,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:56:14,395 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:56:14,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:56:14,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:56:14,402 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 09:56:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:14,416 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2018-01-31 09:56:14,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:56:14,417 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-31 09:56:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:14,422 INFO L225 Difference]: With dead ends: 136 [2018-01-31 09:56:14,422 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 09:56:14,424 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:56:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 09:56:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 09:56:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 09:56:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2018-01-31 09:56:14,446 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2018-01-31 09:56:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:14,446 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2018-01-31 09:56:14,447 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:56:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2018-01-31 09:56:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-31 09:56:14,448 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:14,448 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:14,448 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 09:56:14,448 INFO L82 PathProgramCache]: Analyzing trace with hash 320115213, now seen corresponding path program 1 times [2018-01-31 09:56:14,448 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:14,449 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:14,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:14,449 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:14,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:14,456 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:56:14,511 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:56:14,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:56:14,512 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:56:14,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:56:14,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:56:14,512 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 3 states. [2018-01-31 09:56:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:14,562 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2018-01-31 09:56:14,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:56:14,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-01-31 09:56:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:14,563 INFO L225 Difference]: With dead ends: 129 [2018-01-31 09:56:14,564 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 09:56:14,564 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:56:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 09:56:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 09:56:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 09:56:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2018-01-31 09:56:14,568 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 38 [2018-01-31 09:56:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:14,568 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2018-01-31 09:56:14,568 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:56:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2018-01-31 09:56:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 09:56:14,569 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:14,569 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:14,569 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 09:56:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1650744741, now seen corresponding path program 1 times [2018-01-31 09:56:14,570 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:14,570 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:14,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:14,570 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:14,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:14,579 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:56:14,643 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:14,643 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:14,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:14,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-31 09:56:14,741 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:56:14,741 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 09:56:14,742 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:56:14,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:56:14,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:56:14,742 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 6 states. [2018-01-31 09:56:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:15,001 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2018-01-31 09:56:15,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:56:15,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-01-31 09:56:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:15,002 INFO L225 Difference]: With dead ends: 144 [2018-01-31 09:56:15,002 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 09:56:15,002 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:56:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 09:56:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 09:56:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 09:56:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2018-01-31 09:56:15,006 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 46 [2018-01-31 09:56:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:15,006 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2018-01-31 09:56:15,006 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:56:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2018-01-31 09:56:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-31 09:56:15,007 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:15,007 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:15,007 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 09:56:15,007 INFO L82 PathProgramCache]: Analyzing trace with hash -621479573, now seen corresponding path program 1 times [2018-01-31 09:56:15,007 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:15,007 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:15,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:15,008 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:15,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:15,018 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-31 09:56:15,081 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:15,082 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:15,094 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:15,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-31 09:56:15,190 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:15,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 09:56:15,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:56:15,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:56:15,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:56:15,191 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 10 states. [2018-01-31 09:56:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:15,374 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2018-01-31 09:56:15,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 09:56:15,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-01-31 09:56:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:15,375 INFO L225 Difference]: With dead ends: 162 [2018-01-31 09:56:15,375 INFO L226 Difference]: Without dead ends: 109 [2018-01-31 09:56:15,376 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:56:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-01-31 09:56:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-01-31 09:56:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-31 09:56:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2018-01-31 09:56:15,380 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 62 [2018-01-31 09:56:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:15,380 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2018-01-31 09:56:15,380 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:56:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2018-01-31 09:56:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 09:56:15,382 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:15,382 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:15,382 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 09:56:15,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1813102799, now seen corresponding path program 2 times [2018-01-31 09:56:15,382 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:15,382 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:15,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:15,383 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:15,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:15,396 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 09:56:15,601 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:15,601 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:15,606 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:56:15,616 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:15,634 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:15,644 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:15,646 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-31 09:56:15,762 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:15,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 09:56:15,763 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 09:56:15,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 09:56:15,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:56:15,763 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 14 states. [2018-01-31 09:56:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:16,056 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2018-01-31 09:56:16,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 09:56:16,056 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-01-31 09:56:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:16,057 INFO L225 Difference]: With dead ends: 186 [2018-01-31 09:56:16,057 INFO L226 Difference]: Without dead ends: 125 [2018-01-31 09:56:16,058 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:56:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-31 09:56:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2018-01-31 09:56:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-31 09:56:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2018-01-31 09:56:16,062 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 78 [2018-01-31 09:56:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:16,062 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2018-01-31 09:56:16,062 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 09:56:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2018-01-31 09:56:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-31 09:56:16,063 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:16,064 INFO L351 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:16,064 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 09:56:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash -244961545, now seen corresponding path program 3 times [2018-01-31 09:56:16,064 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:16,064 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:16,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:16,064 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:16,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:16,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 09:56:16,197 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:16,197 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:16,204 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:56:16,211 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:16,219 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:16,224 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:16,233 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:16,234 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:16,236 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:56:16,316 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:16,316 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-31 09:56:16,316 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 09:56:16,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 09:56:16,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-31 09:56:16,316 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand 18 states. [2018-01-31 09:56:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:16,574 INFO L93 Difference]: Finished difference Result 210 states and 226 transitions. [2018-01-31 09:56:16,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 09:56:16,574 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-01-31 09:56:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:16,575 INFO L225 Difference]: With dead ends: 210 [2018-01-31 09:56:16,575 INFO L226 Difference]: Without dead ends: 141 [2018-01-31 09:56:16,576 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2018-01-31 09:56:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-01-31 09:56:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2018-01-31 09:56:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-31 09:56:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2018-01-31 09:56:16,583 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 94 [2018-01-31 09:56:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:16,589 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2018-01-31 09:56:16,589 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 09:56:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2018-01-31 09:56:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-31 09:56:16,590 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:16,590 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:16,590 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 09:56:16,590 INFO L82 PathProgramCache]: Analyzing trace with hash 561170621, now seen corresponding path program 4 times [2018-01-31 09:56:16,590 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:16,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:16,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:16,591 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:16,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:16,601 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:56:16,747 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:16,747 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:16,752 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:56:16,787 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:16,789 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:56:16,864 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:16,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 09:56:16,864 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 09:56:16,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 09:56:16,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:56:16,865 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 15 states. [2018-01-31 09:56:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:16,986 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-31 09:56:16,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 09:56:16,988 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2018-01-31 09:56:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:16,988 INFO L225 Difference]: With dead ends: 221 [2018-01-31 09:56:16,988 INFO L226 Difference]: Without dead ends: 144 [2018-01-31 09:56:16,989 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 09:56:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-31 09:56:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2018-01-31 09:56:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-31 09:56:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2018-01-31 09:56:16,995 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 110 [2018-01-31 09:56:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:16,995 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2018-01-31 09:56:16,995 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 09:56:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2018-01-31 09:56:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-31 09:56:16,996 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:16,996 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:16,996 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 09:56:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1493220437, now seen corresponding path program 5 times [2018-01-31 09:56:16,996 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:16,996 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:16,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:16,997 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:16,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:17,008 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 09:56:17,221 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:17,221 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:17,226 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:56:17,232 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,239 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,241 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,243 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,248 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,264 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,281 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:17,282 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:17,284 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:56:17,410 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:17,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 09:56:17,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 09:56:17,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 09:56:17,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 09:56:17,411 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 24 states. [2018-01-31 09:56:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:17,763 INFO L93 Difference]: Finished difference Result 242 states and 258 transitions. [2018-01-31 09:56:17,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 09:56:17,767 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2018-01-31 09:56:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:17,768 INFO L225 Difference]: With dead ends: 242 [2018-01-31 09:56:17,768 INFO L226 Difference]: Without dead ends: 165 [2018-01-31 09:56:17,769 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 09:56:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-31 09:56:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2018-01-31 09:56:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-31 09:56:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2018-01-31 09:56:17,772 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 118 [2018-01-31 09:56:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:17,773 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2018-01-31 09:56:17,773 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 09:56:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2018-01-31 09:56:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-31 09:56:17,774 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:17,774 INFO L351 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:17,774 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 09:56:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1135751141, now seen corresponding path program 6 times [2018-01-31 09:56:17,774 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:17,774 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:17,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:17,775 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:17,775 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:17,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-01-31 09:56:17,918 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:17,918 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:17,922 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:56:17,932 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,934 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,936 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,939 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,943 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,951 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,961 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,967 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:17,968 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:17,970 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:18,166 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:18,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2018-01-31 09:56:18,166 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 09:56:18,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 09:56:18,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-31 09:56:18,167 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 28 states. [2018-01-31 09:56:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:18,831 INFO L93 Difference]: Finished difference Result 266 states and 282 transitions. [2018-01-31 09:56:18,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 09:56:18,832 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-31 09:56:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:18,832 INFO L225 Difference]: With dead ends: 266 [2018-01-31 09:56:18,832 INFO L226 Difference]: Without dead ends: 181 [2018-01-31 09:56:18,833 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=495, Invalid=2157, Unknown=0, NotChecked=0, Total=2652 [2018-01-31 09:56:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-31 09:56:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2018-01-31 09:56:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-31 09:56:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 179 transitions. [2018-01-31 09:56:18,837 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 179 transitions. Word has length 134 [2018-01-31 09:56:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:18,837 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 179 transitions. [2018-01-31 09:56:18,837 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 09:56:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 179 transitions. [2018-01-31 09:56:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-31 09:56:18,838 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:18,838 INFO L351 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:18,838 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 09:56:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash -423916063, now seen corresponding path program 7 times [2018-01-31 09:56:18,838 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:18,838 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:18,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:18,839 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:18,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:18,861 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:56:19,054 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:19,054 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:19,059 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:19,077 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:56:19,121 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:19,121 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 09:56:19,122 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 09:56:19,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 09:56:19,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 09:56:19,122 INFO L87 Difference]: Start difference. First operand 171 states and 179 transitions. Second operand 21 states. [2018-01-31 09:56:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:19,352 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2018-01-31 09:56:19,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 09:56:19,355 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2018-01-31 09:56:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:19,355 INFO L225 Difference]: With dead ends: 277 [2018-01-31 09:56:19,356 INFO L226 Difference]: Without dead ends: 184 [2018-01-31 09:56:19,356 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 09:56:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-31 09:56:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2018-01-31 09:56:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 09:56:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2018-01-31 09:56:19,359 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 150 [2018-01-31 09:56:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:19,359 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2018-01-31 09:56:19,359 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 09:56:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2018-01-31 09:56:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-31 09:56:19,360 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:19,360 INFO L351 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:19,360 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 09:56:19,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1429473657, now seen corresponding path program 8 times [2018-01-31 09:56:19,360 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:19,360 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:19,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:19,363 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:19,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:19,387 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:56:19,700 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:19,700 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:19,705 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:56:19,715 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:19,728 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:19,729 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:19,731 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:56:19,774 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:19,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 09:56:19,775 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 09:56:19,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 09:56:19,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 09:56:19,775 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 23 states. [2018-01-31 09:56:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:20,012 INFO L93 Difference]: Finished difference Result 285 states and 300 transitions. [2018-01-31 09:56:20,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 09:56:20,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2018-01-31 09:56:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:20,013 INFO L225 Difference]: With dead ends: 285 [2018-01-31 09:56:20,013 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 09:56:20,013 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 09:56:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 09:56:20,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 09:56:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 09:56:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 195 transitions. [2018-01-31 09:56:20,016 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 195 transitions. Word has length 158 [2018-01-31 09:56:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:20,016 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 195 transitions. [2018-01-31 09:56:20,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 09:56:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 195 transitions. [2018-01-31 09:56:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-31 09:56:20,017 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:20,017 INFO L351 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:20,017 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 09:56:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1247580911, now seen corresponding path program 9 times [2018-01-31 09:56:20,017 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:20,018 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:20,018 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:20,018 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:20,018 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:20,027 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 09:56:20,270 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:20,270 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:20,275 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:56:20,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,285 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,288 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,301 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,314 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,358 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,487 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:20,488 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:20,490 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:56:20,732 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:20,732 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2018-01-31 09:56:20,732 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 09:56:20,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 09:56:20,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 09:56:20,733 INFO L87 Difference]: Start difference. First operand 187 states and 195 transitions. Second operand 36 states. [2018-01-31 09:56:21,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:21,451 INFO L93 Difference]: Finished difference Result 306 states and 322 transitions. [2018-01-31 09:56:21,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 09:56:21,463 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2018-01-31 09:56:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:21,464 INFO L225 Difference]: With dead ends: 306 [2018-01-31 09:56:21,464 INFO L226 Difference]: Without dead ends: 213 [2018-01-31 09:56:21,465 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=845, Invalid=3711, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 09:56:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-01-31 09:56:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2018-01-31 09:56:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-31 09:56:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2018-01-31 09:56:21,468 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 166 [2018-01-31 09:56:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:21,468 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2018-01-31 09:56:21,468 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 09:56:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2018-01-31 09:56:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-31 09:56:21,469 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:21,469 INFO L351 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:21,470 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 09:56:21,470 INFO L82 PathProgramCache]: Analyzing trace with hash -578587433, now seen corresponding path program 10 times [2018-01-31 09:56:21,470 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:21,470 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:21,470 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:21,471 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:21,471 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:21,487 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:21,938 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:21,938 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:21,944 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:56:22,038 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:22,041 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:22,128 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:22,128 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 09:56:22,128 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 09:56:22,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 09:56:22,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 09:56:22,128 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 27 states. [2018-01-31 09:56:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:22,532 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2018-01-31 09:56:22,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 09:56:22,544 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2018-01-31 09:56:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:22,545 INFO L225 Difference]: With dead ends: 317 [2018-01-31 09:56:22,545 INFO L226 Difference]: Without dead ends: 216 [2018-01-31 09:56:22,545 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 181 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 09:56:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-31 09:56:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2018-01-31 09:56:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-31 09:56:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 219 transitions. [2018-01-31 09:56:22,548 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 219 transitions. Word has length 182 [2018-01-31 09:56:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:22,548 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 219 transitions. [2018-01-31 09:56:22,548 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 09:56:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 219 transitions. [2018-01-31 09:56:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-31 09:56:22,550 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:22,550 INFO L351 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:22,550 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 09:56:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash -882405265, now seen corresponding path program 11 times [2018-01-31 09:56:22,551 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:22,551 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:22,551 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:22,551 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:22,551 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:22,564 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:22,818 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:22,818 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:22,822 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:56:22,829 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,831 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,835 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,843 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,905 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,935 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:22,988 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:23,000 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:23,003 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:23,095 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:23,095 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 09:56:23,095 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 09:56:23,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 09:56:23,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 09:56:23,096 INFO L87 Difference]: Start difference. First operand 211 states and 219 transitions. Second operand 29 states. [2018-01-31 09:56:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:23,618 INFO L93 Difference]: Finished difference Result 325 states and 340 transitions. [2018-01-31 09:56:23,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 09:56:23,618 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-01-31 09:56:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:23,619 INFO L225 Difference]: With dead ends: 325 [2018-01-31 09:56:23,619 INFO L226 Difference]: Without dead ends: 224 [2018-01-31 09:56:23,620 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 09:56:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-31 09:56:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2018-01-31 09:56:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 09:56:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2018-01-31 09:56:23,622 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 190 [2018-01-31 09:56:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:23,623 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2018-01-31 09:56:23,623 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 09:56:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2018-01-31 09:56:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-31 09:56:23,623 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:23,623 INFO L351 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:23,623 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 09:56:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash -710765561, now seen corresponding path program 12 times [2018-01-31 09:56:23,624 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:23,624 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:23,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:23,624 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:23,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:23,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:25,560 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:25,560 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:25,565 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:56:25,574 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,576 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,578 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,583 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,591 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,617 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,638 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,777 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:25,969 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:26,042 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:26,229 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:26,344 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:26,406 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:26,408 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:26,412 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:26,472 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:26,472 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 09:56:26,472 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 09:56:26,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 09:56:26,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 09:56:26,473 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand 31 states. [2018-01-31 09:56:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:27,014 INFO L93 Difference]: Finished difference Result 333 states and 348 transitions. [2018-01-31 09:56:27,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 09:56:27,014 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-31 09:56:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:27,015 INFO L225 Difference]: With dead ends: 333 [2018-01-31 09:56:27,015 INFO L226 Difference]: Without dead ends: 232 [2018-01-31 09:56:27,015 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 09:56:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-31 09:56:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2018-01-31 09:56:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-31 09:56:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2018-01-31 09:56:27,020 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 198 [2018-01-31 09:56:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:27,020 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2018-01-31 09:56:27,020 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 09:56:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2018-01-31 09:56:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-31 09:56:27,021 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:27,021 INFO L351 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:27,021 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 09:56:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1254915999, now seen corresponding path program 13 times [2018-01-31 09:56:27,021 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:27,021 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:27,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:27,022 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:27,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:27,032 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:27,749 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:27,749 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:27,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:27,777 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:27,830 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:27,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 09:56:27,831 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 09:56:27,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 09:56:27,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:56:27,831 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 33 states. [2018-01-31 09:56:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:28,220 INFO L93 Difference]: Finished difference Result 341 states and 356 transitions. [2018-01-31 09:56:28,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 09:56:28,234 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2018-01-31 09:56:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:28,235 INFO L225 Difference]: With dead ends: 341 [2018-01-31 09:56:28,235 INFO L226 Difference]: Without dead ends: 240 [2018-01-31 09:56:28,236 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 09:56:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-31 09:56:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2018-01-31 09:56:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 09:56:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 243 transitions. [2018-01-31 09:56:28,239 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 243 transitions. Word has length 206 [2018-01-31 09:56:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:28,239 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 243 transitions. [2018-01-31 09:56:28,239 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 09:56:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 243 transitions. [2018-01-31 09:56:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-31 09:56:28,240 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:28,240 INFO L351 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:28,240 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 09:56:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1635603255, now seen corresponding path program 14 times [2018-01-31 09:56:28,240 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:28,240 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:28,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:28,240 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:28,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:28,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:28,944 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:28,944 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:28,948 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:56:28,957 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:28,976 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:28,978 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:28,980 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:29,035 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:29,035 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 09:56:29,035 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 09:56:29,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 09:56:29,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 09:56:29,036 INFO L87 Difference]: Start difference. First operand 235 states and 243 transitions. Second operand 35 states. [2018-01-31 09:56:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:29,613 INFO L93 Difference]: Finished difference Result 349 states and 364 transitions. [2018-01-31 09:56:29,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 09:56:29,613 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 214 [2018-01-31 09:56:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:29,614 INFO L225 Difference]: With dead ends: 349 [2018-01-31 09:56:29,614 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 09:56:29,615 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 09:56:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 09:56:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 09:56:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 09:56:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 251 transitions. [2018-01-31 09:56:29,618 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 251 transitions. Word has length 214 [2018-01-31 09:56:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:29,618 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 251 transitions. [2018-01-31 09:56:29,618 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 09:56:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 251 transitions. [2018-01-31 09:56:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-31 09:56:29,619 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:29,619 INFO L351 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:29,619 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 09:56:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash 944574159, now seen corresponding path program 15 times [2018-01-31 09:56:29,619 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:29,619 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:29,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:29,621 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:29,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:29,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 09:56:30,068 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:30,068 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:30,073 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:56:30,082 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,084 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,087 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,091 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,100 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,159 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,210 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:30,360 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:30,362 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-01-31 09:56:30,656 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:30,656 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2018-01-31 09:56:30,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 09:56:30,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 09:56:30,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 09:56:30,657 INFO L87 Difference]: Start difference. First operand 243 states and 251 transitions. Second operand 50 states. [2018-01-31 09:56:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:31,729 INFO L93 Difference]: Finished difference Result 370 states and 386 transitions. [2018-01-31 09:56:31,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 09:56:31,729 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 222 [2018-01-31 09:56:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:31,730 INFO L225 Difference]: With dead ends: 370 [2018-01-31 09:56:31,730 INFO L226 Difference]: Without dead ends: 269 [2018-01-31 09:56:31,732 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 09:56:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-31 09:56:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 259. [2018-01-31 09:56:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-31 09:56:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 267 transitions. [2018-01-31 09:56:31,735 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 267 transitions. Word has length 222 [2018-01-31 09:56:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:31,735 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 267 transitions. [2018-01-31 09:56:31,735 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 09:56:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 267 transitions. [2018-01-31 09:56:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-31 09:56:31,736 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:31,736 INFO L351 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:31,736 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 09:56:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash -696856427, now seen corresponding path program 16 times [2018-01-31 09:56:31,736 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:31,736 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:31,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:31,737 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:31,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:31,745 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:56:32,247 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:32,247 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:32,251 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:56:32,371 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:32,374 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:56:32,434 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:32,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 09:56:32,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 09:56:32,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 09:56:32,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 09:56:32,435 INFO L87 Difference]: Start difference. First operand 259 states and 267 transitions. Second operand 39 states. [2018-01-31 09:56:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:32,967 INFO L93 Difference]: Finished difference Result 381 states and 396 transitions. [2018-01-31 09:56:32,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 09:56:32,967 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 238 [2018-01-31 09:56:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:32,968 INFO L225 Difference]: With dead ends: 381 [2018-01-31 09:56:32,968 INFO L226 Difference]: Without dead ends: 272 [2018-01-31 09:56:32,969 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 09:56:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-31 09:56:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2018-01-31 09:56:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-31 09:56:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 275 transitions. [2018-01-31 09:56:32,972 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 275 transitions. Word has length 238 [2018-01-31 09:56:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:32,972 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 275 transitions. [2018-01-31 09:56:32,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 09:56:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 275 transitions. [2018-01-31 09:56:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-31 09:56:32,973 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:32,973 INFO L351 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:32,973 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 09:56:32,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1254931411, now seen corresponding path program 17 times [2018-01-31 09:56:32,973 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:32,973 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:32,973 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:32,973 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:32,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:32,982 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 09:56:33,602 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:33,602 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:33,607 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:56:33,615 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,616 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,617 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,620 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,622 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,625 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,627 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,633 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,650 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,658 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:33,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:34,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:34,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:34,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:35,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:35,793 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:35,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-01-31 09:56:36,194 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:36,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 56 [2018-01-31 09:56:36,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-31 09:56:36,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-31 09:56:36,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 09:56:36,196 INFO L87 Difference]: Start difference. First operand 267 states and 275 transitions. Second operand 56 states. [2018-01-31 09:56:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:37,541 INFO L93 Difference]: Finished difference Result 402 states and 418 transitions. [2018-01-31 09:56:37,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 09:56:37,541 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 246 [2018-01-31 09:56:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:37,542 INFO L225 Difference]: With dead ends: 402 [2018-01-31 09:56:37,542 INFO L226 Difference]: Without dead ends: 293 [2018-01-31 09:56:37,543 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2205, Invalid=9351, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 09:56:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-01-31 09:56:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 283. [2018-01-31 09:56:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-31 09:56:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 291 transitions. [2018-01-31 09:56:37,549 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 291 transitions. Word has length 246 [2018-01-31 09:56:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:37,550 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 291 transitions. [2018-01-31 09:56:37,550 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-31 09:56:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 291 transitions. [2018-01-31 09:56:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-31 09:56:37,561 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:37,561 INFO L351 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:37,561 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 09:56:37,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1895137267, now seen corresponding path program 18 times [2018-01-31 09:56:37,561 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:37,561 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:37,561 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:37,562 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:37,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:37,579 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-01-31 09:56:38,226 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:38,227 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:38,231 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:56:38,241 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,248 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,253 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,259 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,321 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,363 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,454 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:38,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:39,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:39,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:40,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:40,305 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:40,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:41,133 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:41,855 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:42,339 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:56:42,341 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:42,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 146 proven. 306 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-01-31 09:56:43,149 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:43,149 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 24] total 63 [2018-01-31 09:56:43,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-31 09:56:43,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-31 09:56:43,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=3281, Unknown=0, NotChecked=0, Total=3906 [2018-01-31 09:56:43,151 INFO L87 Difference]: Start difference. First operand 283 states and 291 transitions. Second operand 63 states. [2018-01-31 09:56:45,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:45,153 INFO L93 Difference]: Finished difference Result 426 states and 442 transitions. [2018-01-31 09:56:45,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-01-31 09:56:45,154 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 262 [2018-01-31 09:56:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:45,154 INFO L225 Difference]: With dead ends: 426 [2018-01-31 09:56:45,154 INFO L226 Difference]: Without dead ends: 309 [2018-01-31 09:56:45,156 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3612 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3054, Invalid=14238, Unknown=0, NotChecked=0, Total=17292 [2018-01-31 09:56:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-01-31 09:56:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-01-31 09:56:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-01-31 09:56:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 307 transitions. [2018-01-31 09:56:45,159 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 307 transitions. Word has length 262 [2018-01-31 09:56:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:45,160 INFO L432 AbstractCegarLoop]: Abstraction has 299 states and 307 transitions. [2018-01-31 09:56:45,160 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-31 09:56:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 307 transitions. [2018-01-31 09:56:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-01-31 09:56:45,160 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:45,161 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:45,161 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 09:56:45,161 INFO L82 PathProgramCache]: Analyzing trace with hash 858809785, now seen corresponding path program 19 times [2018-01-31 09:56:45,161 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:45,161 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:45,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:45,161 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:45,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:45,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:56:45,869 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:45,869 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:45,878 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:45,908 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:56:46,015 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:46,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 09:56:46,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 09:56:46,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 09:56:46,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 09:56:46,016 INFO L87 Difference]: Start difference. First operand 299 states and 307 transitions. Second operand 45 states. [2018-01-31 09:56:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:46,711 INFO L93 Difference]: Finished difference Result 437 states and 452 transitions. [2018-01-31 09:56:46,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 09:56:46,711 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 278 [2018-01-31 09:56:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:46,712 INFO L225 Difference]: With dead ends: 437 [2018-01-31 09:56:46,712 INFO L226 Difference]: Without dead ends: 312 [2018-01-31 09:56:46,712 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 09:56:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-31 09:56:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2018-01-31 09:56:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-31 09:56:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 315 transitions. [2018-01-31 09:56:46,716 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 315 transitions. Word has length 278 [2018-01-31 09:56:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:46,716 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 315 transitions. [2018-01-31 09:56:46,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 09:56:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 315 transitions. [2018-01-31 09:56:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-31 09:56:46,717 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:46,717 INFO L351 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:46,717 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 09:56:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash 408379729, now seen corresponding path program 20 times [2018-01-31 09:56:46,717 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:46,717 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:46,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:46,718 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:56:46,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:46,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:56:47,401 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:47,401 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:47,406 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:56:47,416 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:47,432 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:47,435 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:47,438 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:56:48,067 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:48,067 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2018-01-31 09:56:48,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-31 09:56:48,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-31 09:56:48,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 09:56:48,068 INFO L87 Difference]: Start difference. First operand 307 states and 315 transitions. Second operand 47 states. [2018-01-31 09:56:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:49,073 INFO L93 Difference]: Finished difference Result 445 states and 460 transitions. [2018-01-31 09:56:49,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-31 09:56:49,075 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 286 [2018-01-31 09:56:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:49,076 INFO L225 Difference]: With dead ends: 445 [2018-01-31 09:56:49,076 INFO L226 Difference]: Without dead ends: 320 [2018-01-31 09:56:49,077 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 09:56:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-31 09:56:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2018-01-31 09:56:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-01-31 09:56:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 323 transitions. [2018-01-31 09:56:49,080 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 323 transitions. Word has length 286 [2018-01-31 09:56:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:49,080 INFO L432 AbstractCegarLoop]: Abstraction has 315 states and 323 transitions. [2018-01-31 09:56:49,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-31 09:56:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 323 transitions. [2018-01-31 09:56:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-31 09:56:49,081 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:49,081 INFO L351 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:49,081 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 09:56:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1728756503, now seen corresponding path program 21 times [2018-01-31 09:56:49,081 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:49,081 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:49,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:49,082 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:49,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:49,092 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 09:56:50,359 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:50,359 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:50,365 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 09:56:50,376 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,408 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,426 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,452 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,546 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,585 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,814 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:50,926 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:51,071 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 09:56:51,072 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:51,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 170 proven. 380 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-01-31 09:56:51,721 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:51,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 26] total 71 [2018-01-31 09:56:51,721 INFO L409 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-01-31 09:56:51,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-01-31 09:56:51,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 09:56:51,722 INFO L87 Difference]: Start difference. First operand 315 states and 323 transitions. Second operand 71 states. [2018-01-31 09:56:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:53,903 INFO L93 Difference]: Finished difference Result 466 states and 482 transitions. [2018-01-31 09:56:53,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 09:56:53,903 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 294 [2018-01-31 09:56:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:53,904 INFO L225 Difference]: With dead ends: 466 [2018-01-31 09:56:53,904 INFO L226 Difference]: Without dead ends: 341 [2018-01-31 09:56:53,906 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3896, Invalid=18156, Unknown=0, NotChecked=0, Total=22052 [2018-01-31 09:56:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-01-31 09:56:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 331. [2018-01-31 09:56:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 09:56:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 339 transitions. [2018-01-31 09:56:53,914 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 339 transitions. Word has length 294 [2018-01-31 09:56:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:53,915 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 339 transitions. [2018-01-31 09:56:53,915 INFO L433 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-01-31 09:56:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 339 transitions. [2018-01-31 09:56:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-31 09:56:53,916 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:53,916 INFO L351 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:53,916 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 09:56:53,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1710912687, now seen corresponding path program 22 times [2018-01-31 09:56:53,916 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:53,916 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:53,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:53,917 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:53,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:53,937 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 09:56:54,985 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:54,985 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:54,990 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 09:56:55,434 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:56:55,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:56:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 09:56:55,517 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:56:55,517 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2018-01-31 09:56:55,517 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-31 09:56:55,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-31 09:56:55,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-01-31 09:56:55,518 INFO L87 Difference]: Start difference. First operand 331 states and 339 transitions. Second operand 51 states. [2018-01-31 09:56:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:56:56,377 INFO L93 Difference]: Finished difference Result 477 states and 492 transitions. [2018-01-31 09:56:56,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-31 09:56:56,377 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 310 [2018-01-31 09:56:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:56:56,378 INFO L225 Difference]: With dead ends: 477 [2018-01-31 09:56:56,378 INFO L226 Difference]: Without dead ends: 344 [2018-01-31 09:56:56,379 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2018-01-31 09:56:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-31 09:56:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 339. [2018-01-31 09:56:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-31 09:56:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 347 transitions. [2018-01-31 09:56:56,383 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 347 transitions. Word has length 310 [2018-01-31 09:56:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:56:56,383 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 347 transitions. [2018-01-31 09:56:56,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-31 09:56:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 347 transitions. [2018-01-31 09:56:56,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-31 09:56:56,384 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:56:56,384 INFO L351 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:56:56,384 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 09:56:56,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1888292935, now seen corresponding path program 23 times [2018-01-31 09:56:56,384 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:56:56,384 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:56:56,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:56,385 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:56:56,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:56:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:56:56,395 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:56:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 09:56:57,338 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:56:57,338 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:56:57,342 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 09:56:57,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,354 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,356 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,357 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,360 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,361 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,364 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,381 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,386 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,390 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,399 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,505 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,556 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,587 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,640 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,757 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:57,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:58,331 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:56:58,865 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:57:00,269 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:57:00,274 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:57:00,280 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:57:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 09:57:00,543 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:57:00,543 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2018-01-31 09:57:00,543 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 09:57:00,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 09:57:00,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 09:57:00,544 INFO L87 Difference]: Start difference. First operand 339 states and 347 transitions. Second operand 53 states. [2018-01-31 09:57:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:57:01,434 INFO L93 Difference]: Finished difference Result 485 states and 500 transitions. [2018-01-31 09:57:01,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-31 09:57:01,435 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 318 [2018-01-31 09:57:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:57:01,436 INFO L225 Difference]: With dead ends: 485 [2018-01-31 09:57:01,436 INFO L226 Difference]: Without dead ends: 352 [2018-01-31 09:57:01,436 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 09:57:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-31 09:57:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2018-01-31 09:57:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-31 09:57:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 355 transitions. [2018-01-31 09:57:01,440 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 355 transitions. Word has length 318 [2018-01-31 09:57:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:57:01,440 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 355 transitions. [2018-01-31 09:57:01,440 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 09:57:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 355 transitions. [2018-01-31 09:57:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-01-31 09:57:01,441 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:57:01,441 INFO L351 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:57:01,441 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 09:57:01,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1089901535, now seen corresponding path program 24 times [2018-01-31 09:57:01,441 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:57:01,442 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:57:01,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:57:01,442 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:57:01,442 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:57:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:57:01,453 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:57:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 09:57:02,406 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:57:02,406 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:57:02,411 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 09:57:02,422 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,424 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,426 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,432 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,437 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,482 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,493 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,571 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,610 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,658 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:02,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:03,001 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:03,406 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:04,018 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:04,226 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:05,028 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:05,132 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:07,827 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:09,611 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:10,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:12,943 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:15,621 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 09:57:15,624 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:57:15,635 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:57:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-01-31 09:57:16,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:57:16,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 25] total 76 [2018-01-31 09:57:16,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-01-31 09:57:16,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-01-31 09:57:16,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=4805, Unknown=0, NotChecked=0, Total=5700 [2018-01-31 09:57:16,356 INFO L87 Difference]: Start difference. First operand 347 states and 355 transitions. Second operand 76 states. [2018-01-31 09:57:19,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:57:19,483 INFO L93 Difference]: Finished difference Result 506 states and 522 transitions. [2018-01-31 09:57:19,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-01-31 09:57:19,483 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 326 [2018-01-31 09:57:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:57:19,484 INFO L225 Difference]: With dead ends: 506 [2018-01-31 09:57:19,484 INFO L226 Difference]: Without dead ends: 373 [2018-01-31 09:57:19,486 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4095, Invalid=17661, Unknown=0, NotChecked=0, Total=21756 [2018-01-31 09:57:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-01-31 09:57:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 363. [2018-01-31 09:57:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-01-31 09:57:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 371 transitions. [2018-01-31 09:57:19,490 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 371 transitions. Word has length 326 [2018-01-31 09:57:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:57:19,490 INFO L432 AbstractCegarLoop]: Abstraction has 363 states and 371 transitions. [2018-01-31 09:57:19,490 INFO L433 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-01-31 09:57:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 371 transitions. [2018-01-31 09:57:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-01-31 09:57:19,491 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:57:19,491 INFO L351 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:57:19,491 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 09:57:19,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1427901861, now seen corresponding path program 25 times [2018-01-31 09:57:19,491 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:57:19,492 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:57:19,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:57:19,492 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 09:57:19,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:57:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:57:19,503 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-31 09:57:20,028 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 09:57:20,030 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 09:57:20,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:57:20 BasicIcfg [2018-01-31 09:57:20,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:57:20,031 INFO L168 Benchmark]: Toolchain (without parser) took 153921.88 ms. Allocated memory was 151.0 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 116.1 MB in the beginning and 402.5 MB in the end (delta: -286.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-01-31 09:57:20,031 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:57:20,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.45 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:57:20,031 INFO L168 Benchmark]: Boogie Preprocessor took 18.78 ms. Allocated memory is still 151.0 MB. Free memory was 107.2 MB in the beginning and 105.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:57:20,031 INFO L168 Benchmark]: RCFGBuilder took 412.96 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 86.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 5.3 GB. [2018-01-31 09:57:20,031 INFO L168 Benchmark]: IcfgTransformer took 87597.10 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 86.7 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 69.4 MB. Max. memory is 5.3 GB. [2018-01-31 09:57:20,031 INFO L168 Benchmark]: TraceAbstraction took 65754.07 ms. Allocated memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: -11.0 MB). Free memory was 2.0 GB in the beginning and 402.5 MB in the end (delta: 1.6 GB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. [2018-01-31 09:57:20,032 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 151.0 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 136.45 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.78 ms. Allocated memory is still 151.0 MB. Free memory was 107.2 MB in the beginning and 105.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 412.96 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 86.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 5.3 GB. * IcfgTransformer took 87597.10 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 86.7 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 69.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 65754.07 ms. Allocated memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: -11.0 MB). Free memory was 2.0 GB in the beginning and 402.5 MB in the end (delta: 1.6 GB). Peak memory consumption was 1.6 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 77 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 1461 LocStat_NO_SUPPORTING_DISEQUALITIES : 3216 LocStat_NO_DISJUNCTIONS : -154 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 102 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 162 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 100 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.007823 RENAME_VARIABLES(MILLISECONDS) : 0.211077 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.000301 PROJECTAWAY(MILLISECONDS) : 0.069123 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.041010 DISJOIN(MILLISECONDS) : 0.641409 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.226022 ADD_EQUALITY(MILLISECONDS) : 0.004578 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.002171 #CONJOIN_DISJUNCTIVE : 1096 #RENAME_VARIABLES : 2401 #UNFREEZE : 0 #CONJOIN : 1530 #PROJECTAWAY : 1430 #ADD_WEAK_EQUALITY : 14 #DISJOIN : 377 #RENAME_VARIABLES_DISJUNCTIVE : 2445 #ADD_EQUALITY : 167 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 5 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 5 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 10 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was analyzing trace of length 343 with TraceHistMax 27, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 29 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. TIMEOUT Result, 65.7s OverallTime, 28 OverallIterations, 27 TraceHistogramMax, 19.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1978 SDtfs, 2819 SDslu, 38504 SDs, 0 SdLazy, 5081 SolverSat, 665 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6396 GetRequests, 4735 SyntacticMatches, 0 SemanticMatches, 1661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29792 ImplicationChecksByTransitivity, 30.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=363occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 190 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 25.8s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 9846 NumberOfCodeBlocks, 9606 NumberOfCodeBlocksAsserted, 206 NumberOfCheckSat, 9794 ConstructedInterpolants, 0 QuantifiedInterpolants, 4498128 SizeOfPredicates, 561 NumberOfNonLiveVariables, 6707 ConjunctsInSsa, 598 ConjunctsInUnsatCore, 52 InterpolantComputations, 3 PerfectInterpolantSequences, 16994/52992 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_09-57-20-036.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_09-57-20-036.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_09-57-20-036.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_09-57-20-036.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/avg40_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-57-20-036.csv Completed graceful shutdown