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/sep60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 10:24:46,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 10:24:46,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 10:24:46,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 10:24:46,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 10:24:46,147 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 10:24:46,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 10:24:46,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 10:24:46,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 10:24:46,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 10:24:46,150 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 10:24:46,150 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 10:24:46,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 10:24:46,151 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 10:24:46,152 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 10:24:46,153 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 10:24:46,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 10:24:46,155 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 10:24:46,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 10:24:46,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 10:24:46,157 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 10:24:46,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 10:24:46,158 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 10:24:46,158 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 10:24:46,159 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 10:24:46,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 10:24:46,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 10:24:46,160 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 10:24:46,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 10:24:46,160 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 10:24:46,160 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 10:24:46,161 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 10:24:46,166 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 10:24:46,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 10:24:46,166 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 10:24:46,166 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 10:24:46,166 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 10:24:46,167 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 10:24:46,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 10:24:46,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 10:24:46,168 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 10:24:46,168 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 10:24:46,169 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 10:24:46,169 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 10:24:46,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 10:24:46,194 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 10:24:46,196 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 10:24:46,197 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 10:24:46,197 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 10:24:46,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60_true-unreach-call.i [2018-01-31 10:24:46,260 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 10:24:46,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 10:24:46,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 10:24:46,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 10:24:46,265 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 10:24:46,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,267 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 10:24:46, skipping insertion in model container [2018-01-31 10:24:46,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,277 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:24:46,286 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:24:46,357 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:24:46,369 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:24:46,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46 WrapperNode [2018-01-31 10:24:46,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 10:24:46,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 10:24:46,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 10:24:46,374 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 10:24:46,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 10:24:46,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 10:24:46,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 10:24:46,394 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 10:24:46,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (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 10:24:46,435 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 10:24:46,435 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 10:24:46,435 INFO L136 BoogieDeclarations]: Found implementation of procedure sep [2018-01-31 10:24:46,435 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 10:24:46,435 INFO L128 BoogieDeclarations]: Found specification of procedure sep [2018-01-31 10:24:46,436 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 10:24:46,436 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 10:24:46,436 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 10:24:46,776 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 10:24:46,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:24:46 BoogieIcfgContainer [2018-01-31 10:24:46,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 10:24:46,776 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 10:24:46,776 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 10:24:46,777 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 10:24:46,779 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:24:46" (1/1) ... [2018-01-31 10:24:46,784 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 10:24:46,784 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 10:24:46,784 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 10:24:46,809 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 10:24:46,826 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 10:24:46,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 10:25:30,941 INFO L314 AbstractInterpreter]: Visited 97 different actions 931 times. Merged at 71 different actions 448 times. Widened at 1 different actions 1 times. Found 80 fixpoints after 14 different actions. Largest state had 68 variables. [2018-01-31 10:25:30,942 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 10:25:30,949 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 10 [2018-01-31 10:25:30,950 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 10:25:30,950 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 10:25:30,950 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_4| |v_main_~#x~5.base_2|), at (SUMMARY for call write~int(#t~nondet5, ~#x~5.base, ~#x~5.offset + ~i~6 * 4, 4); srcloc: L27')) ((select (select |v_#memory_int_6| |v_main_~#x~5.base_5|) (+ |v_main_~#x~5.offset_5| 4)), at (SUMMARY for call #t~mem10 := read~int(~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L32''')) ((select (select |v_#memory_int_11| |v_main_~#x~5.base_9|) |v_main_~#x~5.offset_9|), at (SUMMARY for call #t~mem13 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L34)) ((select (select |v_#memory_int_5| |v_main_~#x~5.base_4|) |v_main_~#x~5.offset_4|), at (SUMMARY for call #t~mem8 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L32)) ((select |v_#memory_int_14| |v_main_~#x~5.base_11|), at (SUMMARY for call write~int(#t~mem16, ~#x~5.base, ~#x~5.offset + ~i~7 * 4, 4); srcloc: L36')) ((select (select |v_#memory_int_12| |v_main_~#x~5.base_10|) (+ (* 4 v_main_~i~7_4) |v_main_~#x~5.offset_10| 4)), at (SUMMARY for call #t~mem16 := read~int(~#x~5.base, ~#x~5.offset + (~i~7 + 1) * 4, 4); srcloc: L36)) ((select |v_#memory_int_10| |v_main_~#x~5.base_7|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L32'''''')) ((select (select |v_#memory_int_17| v_sep_~x.base_1) (+ v_sep_~x.offset_1 (* 4 v_sep_~i~4_2))), at (SUMMARY for call #t~mem1 := read~int(~x.base, ~x.offset + ~i~4 * 4, 4); srcloc: L9)) ((select |v_#memory_int_8| |v_main_~#x~5.base_6|), at (SUMMARY for call write~int(#t~mem10, ~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L32'''')) ((select |v_#memory_int_16| |v_main_~#x~5.base_12|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 236, 4); srcloc: L35''''''')) [2018-01-31 10:25:30,969 INFO L547 PartitionManager]: partitioning result: [2018-01-31 10:25:30,969 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 10:25:30,969 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 10:25:30,969 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:25:30,969 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:25:30,969 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 10:25:30,969 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:25:30,969 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:25:30,970 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 10:25:30,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:25:30 BasicIcfg [2018-01-31 10:25:30,980 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 10:25:30,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 10:25:30,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 10:25:30,983 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 10:25:30,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:24:46" (1/4) ... [2018-01-31 10:25:30,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf31d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:25:30, skipping insertion in model container [2018-01-31 10:25:30,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:24:46" (2/4) ... [2018-01-31 10:25:30,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf31d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:25:30, skipping insertion in model container [2018-01-31 10:25:30,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:24:46" (3/4) ... [2018-01-31 10:25:30,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf31d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:25:30, skipping insertion in model container [2018-01-31 10:25:30,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:25:30" (4/4) ... [2018-01-31 10:25:30,986 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 10:25:30,991 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 10:25:30,997 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 10:25:31,103 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 10:25:31,103 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 10:25:31,104 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 10:25:31,104 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 10:25:31,104 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 10:25:31,104 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 10:25:31,104 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 10:25:31,104 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 10:25:31,104 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 10:25:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-01-31 10:25:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 10:25:31,115 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:31,116 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:31,116 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 10:25:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1929961395, now seen corresponding path program 1 times [2018-01-31 10:25:31,119 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:31,120 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:31,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,150 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:31,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:31,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:25:31,196 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:25:31,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 10:25:31,197 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 10:25:31,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 10:25:31,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:25:31,205 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2018-01-31 10:25:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:31,222 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2018-01-31 10:25:31,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 10:25:31,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-31 10:25:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:31,230 INFO L225 Difference]: With dead ends: 146 [2018-01-31 10:25:31,231 INFO L226 Difference]: Without dead ends: 76 [2018-01-31 10:25:31,233 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:25:31,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-31 10:25:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-31 10:25:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-31 10:25:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2018-01-31 10:25:31,265 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 36 [2018-01-31 10:25:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:31,265 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2018-01-31 10:25:31,265 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 10:25:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2018-01-31 10:25:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-31 10:25:31,268 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:31,269 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:31,269 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 10:25:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2081485741, now seen corresponding path program 1 times [2018-01-31 10:25:31,269 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:31,269 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:31,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,270 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:31,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:31,278 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:25:31,332 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:25:31,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 10:25:31,332 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 10:25:31,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 10:25:31,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 10:25:31,333 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 3 states. [2018-01-31 10:25:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:31,380 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2018-01-31 10:25:31,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 10:25:31,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-01-31 10:25:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:31,381 INFO L225 Difference]: With dead ends: 139 [2018-01-31 10:25:31,381 INFO L226 Difference]: Without dead ends: 83 [2018-01-31 10:25:31,382 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 10:25:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-31 10:25:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2018-01-31 10:25:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-31 10:25:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2018-01-31 10:25:31,386 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 38 [2018-01-31 10:25:31,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:31,386 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2018-01-31 10:25:31,386 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 10:25:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2018-01-31 10:25:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 10:25:31,387 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:31,387 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:31,387 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 10:25:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -351365841, now seen corresponding path program 1 times [2018-01-31 10:25:31,388 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:31,388 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:31,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,389 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:31,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:31,398 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:25:31,467 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:31,467 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:31,480 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:31,508 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-31 10:25:31,606 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 10:25:31,607 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 10:25:31,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 10:25:31,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 10:25:31,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 10:25:31,607 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 6 states. [2018-01-31 10:25:31,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:31,788 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2018-01-31 10:25:31,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 10:25:31,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-01-31 10:25:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:31,789 INFO L225 Difference]: With dead ends: 154 [2018-01-31 10:25:31,789 INFO L226 Difference]: Without dead ends: 98 [2018-01-31 10:25:31,790 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 10:25:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-31 10:25:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2018-01-31 10:25:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-31 10:25:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2018-01-31 10:25:31,795 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 46 [2018-01-31 10:25:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:31,795 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2018-01-31 10:25:31,795 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 10:25:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2018-01-31 10:25:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-31 10:25:31,796 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:31,796 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:31,796 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 10:25:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash -577067975, now seen corresponding path program 1 times [2018-01-31 10:25:31,797 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:31,797 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:31,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,797 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:31,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:31,807 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-31 10:25:31,882 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:31,882 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:31,887 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:31,915 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-31 10:25:32,037 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:32,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 10:25:32,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 10:25:32,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 10:25:32,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 10:25:32,038 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 10 states. [2018-01-31 10:25:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:32,410 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2018-01-31 10:25:32,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 10:25:32,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-01-31 10:25:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:32,411 INFO L225 Difference]: With dead ends: 172 [2018-01-31 10:25:32,411 INFO L226 Difference]: Without dead ends: 114 [2018-01-31 10:25:32,412 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 10:25:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-31 10:25:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2018-01-31 10:25:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-01-31 10:25:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2018-01-31 10:25:32,415 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 62 [2018-01-31 10:25:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:32,416 INFO L432 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2018-01-31 10:25:32,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 10:25:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2018-01-31 10:25:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 10:25:32,418 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:32,419 INFO L351 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:32,419 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 10:25:32,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1689178435, now seen corresponding path program 2 times [2018-01-31 10:25:32,419 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:32,419 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:32,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:32,420 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:32,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:32,438 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 10:25:32,533 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:32,533 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:32,552 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:25:32,561 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:32,566 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:32,567 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:32,568 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-31 10:25:32,662 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:32,662 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 10:25:32,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 10:25:32,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 10:25:32,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 10:25:32,662 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand 14 states. [2018-01-31 10:25:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:33,014 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2018-01-31 10:25:33,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 10:25:33,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-01-31 10:25:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:33,015 INFO L225 Difference]: With dead ends: 196 [2018-01-31 10:25:33,015 INFO L226 Difference]: Without dead ends: 130 [2018-01-31 10:25:33,015 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 10:25:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-31 10:25:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2018-01-31 10:25:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-01-31 10:25:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2018-01-31 10:25:33,019 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 78 [2018-01-31 10:25:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:33,019 INFO L432 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2018-01-31 10:25:33,019 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 10:25:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2018-01-31 10:25:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-31 10:25:33,020 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:33,020 INFO L351 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:33,020 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 10:25:33,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1052580941, now seen corresponding path program 3 times [2018-01-31 10:25:33,020 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:33,021 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:33,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:33,021 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:33,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:33,032 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-31 10:25:33,161 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:33,161 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:33,169 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:25:33,176 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:33,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:33,187 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:33,197 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:33,197 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:33,199 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 10:25:33,317 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:33,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-31 10:25:33,317 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 10:25:33,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 10:25:33,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-31 10:25:33,318 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 18 states. [2018-01-31 10:25:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:33,638 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2018-01-31 10:25:33,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 10:25:33,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-01-31 10:25:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:33,642 INFO L225 Difference]: With dead ends: 220 [2018-01-31 10:25:33,642 INFO L226 Difference]: Without dead ends: 146 [2018-01-31 10:25:33,643 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2018-01-31 10:25:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-31 10:25:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2018-01-31 10:25:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-31 10:25:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2018-01-31 10:25:33,651 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 94 [2018-01-31 10:25:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:33,651 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2018-01-31 10:25:33,651 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 10:25:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2018-01-31 10:25:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-31 10:25:33,652 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:33,652 INFO L351 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:33,652 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 10:25:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1204320937, now seen corresponding path program 4 times [2018-01-31 10:25:33,652 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:33,652 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:33,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:33,653 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:33,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:33,687 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 10:25:33,933 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:33,933 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:33,938 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:25:33,959 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:33,961 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 10:25:34,005 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:34,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 10:25:34,006 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 10:25:34,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 10:25:34,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 10:25:34,006 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand 15 states. [2018-01-31 10:25:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:34,113 INFO L93 Difference]: Finished difference Result 231 states and 248 transitions. [2018-01-31 10:25:34,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 10:25:34,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2018-01-31 10:25:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:34,124 INFO L225 Difference]: With dead ends: 231 [2018-01-31 10:25:34,124 INFO L226 Difference]: Without dead ends: 149 [2018-01-31 10:25:34,125 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 10:25:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-31 10:25:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 144. [2018-01-31 10:25:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-31 10:25:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2018-01-31 10:25:34,131 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 110 [2018-01-31 10:25:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:34,132 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2018-01-31 10:25:34,132 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 10:25:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2018-01-31 10:25:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-31 10:25:34,132 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:34,132 INFO L351 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:34,132 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 10:25:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2034864691, now seen corresponding path program 5 times [2018-01-31 10:25:34,133 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:34,133 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:34,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:34,133 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:34,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:34,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-31 10:25:34,313 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:34,313 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:34,318 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:25:34,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,344 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,381 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,417 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:34,427 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:34,429 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 10:25:34,668 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:34,669 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 10:25:34,669 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 10:25:34,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 10:25:34,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 10:25:34,669 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 24 states. [2018-01-31 10:25:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:35,058 INFO L93 Difference]: Finished difference Result 252 states and 270 transitions. [2018-01-31 10:25:35,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 10:25:35,061 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2018-01-31 10:25:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:35,062 INFO L225 Difference]: With dead ends: 252 [2018-01-31 10:25:35,062 INFO L226 Difference]: Without dead ends: 170 [2018-01-31 10:25:35,063 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 10:25:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-31 10:25:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2018-01-31 10:25:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-31 10:25:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2018-01-31 10:25:35,075 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 118 [2018-01-31 10:25:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:35,075 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2018-01-31 10:25:35,075 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 10:25:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2018-01-31 10:25:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-31 10:25:35,076 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:35,076 INFO L351 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:35,076 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 10:25:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1359274301, now seen corresponding path program 6 times [2018-01-31 10:25:35,076 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:35,076 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:35,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:35,078 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:35,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:35,107 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-01-31 10:25:35,281 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:35,281 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:35,286 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:25:35,294 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,296 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,298 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,301 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,306 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,327 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,341 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,380 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:35,381 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:35,383 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:35,534 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:35,534 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2018-01-31 10:25:35,534 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 10:25:35,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 10:25:35,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-31 10:25:35,535 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand 28 states. [2018-01-31 10:25:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:36,095 INFO L93 Difference]: Finished difference Result 276 states and 294 transitions. [2018-01-31 10:25:36,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 10:25:36,098 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-31 10:25:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:36,099 INFO L225 Difference]: With dead ends: 276 [2018-01-31 10:25:36,099 INFO L226 Difference]: Without dead ends: 186 [2018-01-31 10:25:36,099 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 10:25:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-31 10:25:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 176. [2018-01-31 10:25:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-31 10:25:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 185 transitions. [2018-01-31 10:25:36,111 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 185 transitions. Word has length 134 [2018-01-31 10:25:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:36,111 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 185 transitions. [2018-01-31 10:25:36,111 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 10:25:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 185 transitions. [2018-01-31 10:25:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-31 10:25:36,112 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:36,112 INFO L351 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:36,112 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 10:25:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1132442041, now seen corresponding path program 7 times [2018-01-31 10:25:36,112 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:36,112 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:36,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:36,113 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:36,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:36,144 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 10:25:36,336 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:36,336 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:36,342 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:36,360 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 10:25:36,403 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:36,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 10:25:36,403 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 10:25:36,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 10:25:36,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 10:25:36,403 INFO L87 Difference]: Start difference. First operand 176 states and 185 transitions. Second operand 21 states. [2018-01-31 10:25:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:36,617 INFO L93 Difference]: Finished difference Result 287 states and 304 transitions. [2018-01-31 10:25:36,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 10:25:36,619 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2018-01-31 10:25:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:36,620 INFO L225 Difference]: With dead ends: 287 [2018-01-31 10:25:36,620 INFO L226 Difference]: Without dead ends: 189 [2018-01-31 10:25:36,621 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 10:25:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-31 10:25:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 184. [2018-01-31 10:25:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-01-31 10:25:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 193 transitions. [2018-01-31 10:25:36,624 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 193 transitions. Word has length 150 [2018-01-31 10:25:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:36,625 INFO L432 AbstractCegarLoop]: Abstraction has 184 states and 193 transitions. [2018-01-31 10:25:36,625 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 10:25:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 193 transitions. [2018-01-31 10:25:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-31 10:25:36,626 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:36,626 INFO L351 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:36,626 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 10:25:36,626 INFO L82 PathProgramCache]: Analyzing trace with hash -549761245, now seen corresponding path program 8 times [2018-01-31 10:25:36,626 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:36,626 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:36,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:36,627 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:36,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:36,635 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 10:25:36,860 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:36,860 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:36,876 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:25:36,886 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:36,901 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:36,903 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:36,904 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 10:25:36,951 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:36,952 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 10:25:36,952 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 10:25:36,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 10:25:36,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 10:25:36,952 INFO L87 Difference]: Start difference. First operand 184 states and 193 transitions. Second operand 23 states. [2018-01-31 10:25:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:37,176 INFO L93 Difference]: Finished difference Result 295 states and 312 transitions. [2018-01-31 10:25:37,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 10:25:37,177 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2018-01-31 10:25:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:37,177 INFO L225 Difference]: With dead ends: 295 [2018-01-31 10:25:37,178 INFO L226 Difference]: Without dead ends: 197 [2018-01-31 10:25:37,178 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:25:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-31 10:25:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2018-01-31 10:25:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-31 10:25:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 201 transitions. [2018-01-31 10:25:37,181 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 201 transitions. Word has length 158 [2018-01-31 10:25:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:37,181 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 201 transitions. [2018-01-31 10:25:37,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 10:25:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 201 transitions. [2018-01-31 10:25:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-31 10:25:37,182 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:37,182 INFO L351 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:37,182 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 10:25:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash -2117749761, now seen corresponding path program 9 times [2018-01-31 10:25:37,183 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:37,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:37,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:37,183 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:37,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:37,192 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-01-31 10:25:37,626 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:37,626 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:37,632 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:25:37,640 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,643 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,645 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,659 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,679 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,724 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,754 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:37,755 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:37,757 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 74 proven. 132 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-01-31 10:25:38,098 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:38,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 39 [2018-01-31 10:25:38,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 10:25:38,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 10:25:38,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 10:25:38,099 INFO L87 Difference]: Start difference. First operand 192 states and 201 transitions. Second operand 39 states. [2018-01-31 10:25:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:39,614 INFO L93 Difference]: Finished difference Result 316 states and 334 transitions. [2018-01-31 10:25:39,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-31 10:25:39,614 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 166 [2018-01-31 10:25:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:39,615 INFO L225 Difference]: With dead ends: 316 [2018-01-31 10:25:39,615 INFO L226 Difference]: Without dead ends: 218 [2018-01-31 10:25:39,616 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1152, Invalid=5328, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 10:25:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-31 10:25:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 208. [2018-01-31 10:25:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-31 10:25:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions. [2018-01-31 10:25:39,619 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 166 [2018-01-31 10:25:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:39,619 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions. [2018-01-31 10:25:39,619 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 10:25:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions. [2018-01-31 10:25:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-31 10:25:39,620 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:39,630 INFO L351 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:39,630 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 10:25:39,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1814089481, now seen corresponding path program 10 times [2018-01-31 10:25:39,630 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:39,631 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:39,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:39,631 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:39,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:39,643 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:39,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:39,887 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:39,892 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:25:39,964 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:39,966 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:40,014 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:40,014 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 10:25:40,014 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 10:25:40,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 10:25:40,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 10:25:40,015 INFO L87 Difference]: Start difference. First operand 208 states and 217 transitions. Second operand 27 states. [2018-01-31 10:25:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:40,335 INFO L93 Difference]: Finished difference Result 327 states and 344 transitions. [2018-01-31 10:25:40,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 10:25:40,335 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2018-01-31 10:25:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:40,336 INFO L225 Difference]: With dead ends: 327 [2018-01-31 10:25:40,336 INFO L226 Difference]: Without dead ends: 221 [2018-01-31 10:25:40,337 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 10:25:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-31 10:25:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 216. [2018-01-31 10:25:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-31 10:25:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2018-01-31 10:25:40,340 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 182 [2018-01-31 10:25:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:40,340 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2018-01-31 10:25:40,340 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 10:25:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2018-01-31 10:25:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-31 10:25:40,343 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:40,343 INFO L351 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:40,343 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 10:25:40,343 INFO L82 PathProgramCache]: Analyzing trace with hash 138502117, now seen corresponding path program 11 times [2018-01-31 10:25:40,343 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:40,343 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:40,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:40,344 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:40,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:40,352 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:40,690 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:40,690 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:40,694 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:25:40,701 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,702 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,703 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,704 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,706 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,715 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,719 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,759 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,783 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:40,840 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:40,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:40,914 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:40,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 10:25:40,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:25:40,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:25:40,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:25:40,915 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand 29 states. [2018-01-31 10:25:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:41,308 INFO L93 Difference]: Finished difference Result 335 states and 352 transitions. [2018-01-31 10:25:41,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 10:25:41,309 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-01-31 10:25:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:41,310 INFO L225 Difference]: With dead ends: 335 [2018-01-31 10:25:41,310 INFO L226 Difference]: Without dead ends: 229 [2018-01-31 10:25:41,311 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 10:25:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-01-31 10:25:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2018-01-31 10:25:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-01-31 10:25:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions. [2018-01-31 10:25:41,314 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 190 [2018-01-31 10:25:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:41,314 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 233 transitions. [2018-01-31 10:25:41,314 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:25:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 233 transitions. [2018-01-31 10:25:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-31 10:25:41,314 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:41,315 INFO L351 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:41,315 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 10:25:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1839289537, now seen corresponding path program 12 times [2018-01-31 10:25:41,315 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:41,315 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:41,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:41,315 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:41,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:41,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:41,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:41,796 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:41,800 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:25:41,808 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:41,811 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:41,812 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:41,817 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:41,822 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:41,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:41,879 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:42,022 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:42,048 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:42,250 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:42,409 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:42,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:42,940 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:43,192 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:43,193 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:43,197 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:43,250 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:43,250 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 10:25:43,251 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 10:25:43,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 10:25:43,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 10:25:43,251 INFO L87 Difference]: Start difference. First operand 224 states and 233 transitions. Second operand 31 states. [2018-01-31 10:25:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:43,621 INFO L93 Difference]: Finished difference Result 343 states and 360 transitions. [2018-01-31 10:25:43,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 10:25:43,622 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-31 10:25:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:43,622 INFO L225 Difference]: With dead ends: 343 [2018-01-31 10:25:43,622 INFO L226 Difference]: Without dead ends: 237 [2018-01-31 10:25:43,623 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:25:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-01-31 10:25:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2018-01-31 10:25:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-01-31 10:25:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 241 transitions. [2018-01-31 10:25:43,626 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 241 transitions. Word has length 198 [2018-01-31 10:25:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:43,626 INFO L432 AbstractCegarLoop]: Abstraction has 232 states and 241 transitions. [2018-01-31 10:25:43,626 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 10:25:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 241 transitions. [2018-01-31 10:25:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-31 10:25:43,627 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:43,627 INFO L351 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:43,627 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 10:25:43,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1466126947, now seen corresponding path program 13 times [2018-01-31 10:25:43,627 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:43,627 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:43,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:43,628 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:43,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:43,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:44,244 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:44,244 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:44,249 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:44,272 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:44,325 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:44,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 10:25:44,325 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:25:44,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:25:44,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:25:44,326 INFO L87 Difference]: Start difference. First operand 232 states and 241 transitions. Second operand 33 states. [2018-01-31 10:25:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:44,790 INFO L93 Difference]: Finished difference Result 351 states and 368 transitions. [2018-01-31 10:25:44,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 10:25:44,790 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2018-01-31 10:25:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:44,790 INFO L225 Difference]: With dead ends: 351 [2018-01-31 10:25:44,791 INFO L226 Difference]: Without dead ends: 245 [2018-01-31 10:25:44,791 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 10:25:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-31 10:25:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2018-01-31 10:25:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-31 10:25:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 249 transitions. [2018-01-31 10:25:44,794 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 249 transitions. Word has length 206 [2018-01-31 10:25:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:44,794 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 249 transitions. [2018-01-31 10:25:44,794 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:25:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 249 transitions. [2018-01-31 10:25:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-31 10:25:44,795 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:44,795 INFO L351 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:44,795 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 10:25:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1450218887, now seen corresponding path program 14 times [2018-01-31 10:25:44,795 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:44,796 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:44,796 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:44,796 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:25:44,796 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:44,804 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:45,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:45,507 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:45,512 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:25:45,523 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:45,534 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:45,537 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:45,539 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:45,594 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:45,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 10:25:45,594 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 10:25:45,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 10:25:45,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 10:25:45,595 INFO L87 Difference]: Start difference. First operand 240 states and 249 transitions. Second operand 35 states. [2018-01-31 10:25:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:47,016 INFO L93 Difference]: Finished difference Result 359 states and 376 transitions. [2018-01-31 10:25:47,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 10:25:47,016 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 214 [2018-01-31 10:25:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:47,017 INFO L225 Difference]: With dead ends: 359 [2018-01-31 10:25:47,017 INFO L226 Difference]: Without dead ends: 253 [2018-01-31 10:25:47,018 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 10:25:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-01-31 10:25:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2018-01-31 10:25:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-01-31 10:25:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 257 transitions. [2018-01-31 10:25:47,021 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 257 transitions. Word has length 214 [2018-01-31 10:25:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:47,022 INFO L432 AbstractCegarLoop]: Abstraction has 248 states and 257 transitions. [2018-01-31 10:25:47,022 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 10:25:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 257 transitions. [2018-01-31 10:25:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-31 10:25:47,022 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:47,022 INFO L351 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:47,022 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 10:25:47,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1154845525, now seen corresponding path program 15 times [2018-01-31 10:25:47,023 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:47,023 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:47,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:47,023 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:47,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:47,032 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-01-31 10:25:47,610 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:47,610 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:47,614 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:25:47,630 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,633 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,636 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,640 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,647 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,681 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,724 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,862 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:25:47,863 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:47,865 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-01-31 10:25:48,184 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:48,184 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2018-01-31 10:25:48,184 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 10:25:48,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 10:25:48,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 10:25:48,185 INFO L87 Difference]: Start difference. First operand 248 states and 257 transitions. Second operand 50 states. [2018-01-31 10:25:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:49,304 INFO L93 Difference]: Finished difference Result 380 states and 398 transitions. [2018-01-31 10:25:49,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 10:25:49,306 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 222 [2018-01-31 10:25:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:49,307 INFO L225 Difference]: With dead ends: 380 [2018-01-31 10:25:49,307 INFO L226 Difference]: Without dead ends: 274 [2018-01-31 10:25:49,309 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 10:25:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-31 10:25:49,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 264. [2018-01-31 10:25:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-01-31 10:25:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 273 transitions. [2018-01-31 10:25:49,312 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 273 transitions. Word has length 222 [2018-01-31 10:25:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:49,312 INFO L432 AbstractCegarLoop]: Abstraction has 264 states and 273 transitions. [2018-01-31 10:25:49,312 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 10:25:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 273 transitions. [2018-01-31 10:25:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-31 10:25:49,313 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:49,313 INFO L351 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:49,313 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 10:25:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -634737569, now seen corresponding path program 16 times [2018-01-31 10:25:49,314 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:49,314 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:49,314 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:49,314 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:49,314 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:49,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 10:25:49,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:49,796 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:49,800 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:25:49,920 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:49,923 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 10:25:50,026 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:50,026 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 10:25:50,027 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 10:25:50,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 10:25:50,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 10:25:50,027 INFO L87 Difference]: Start difference. First operand 264 states and 273 transitions. Second operand 39 states. [2018-01-31 10:25:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:50,672 INFO L93 Difference]: Finished difference Result 391 states and 408 transitions. [2018-01-31 10:25:50,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 10:25:50,672 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 238 [2018-01-31 10:25:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:50,673 INFO L225 Difference]: With dead ends: 391 [2018-01-31 10:25:50,673 INFO L226 Difference]: Without dead ends: 277 [2018-01-31 10:25:50,674 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 10:25:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-01-31 10:25:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 272. [2018-01-31 10:25:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-01-31 10:25:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 281 transitions. [2018-01-31 10:25:50,688 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 281 transitions. Word has length 238 [2018-01-31 10:25:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:50,688 INFO L432 AbstractCegarLoop]: Abstraction has 272 states and 281 transitions. [2018-01-31 10:25:50,688 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 10:25:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 281 transitions. [2018-01-31 10:25:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-31 10:25:50,689 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:50,689 INFO L351 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:50,689 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 10:25:50,689 INFO L82 PathProgramCache]: Analyzing trace with hash 647166267, now seen corresponding path program 17 times [2018-01-31 10:25:50,689 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:50,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:50,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:50,690 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:50,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:50,712 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-31 10:25:51,924 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:51,924 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:51,929 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:25:51,940 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,950 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,952 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,955 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,966 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:51,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:52,057 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:52,134 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:52,500 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:52,694 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:53,047 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:53,626 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:25:53,628 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:25:53,632 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:25:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-01-31 10:25:54,013 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:25:54,013 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 56 [2018-01-31 10:25:54,013 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-31 10:25:54,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-31 10:25:54,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 10:25:54,014 INFO L87 Difference]: Start difference. First operand 272 states and 281 transitions. Second operand 56 states. [2018-01-31 10:25:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:25:55,494 INFO L93 Difference]: Finished difference Result 412 states and 430 transitions. [2018-01-31 10:25:55,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 10:25:55,494 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 246 [2018-01-31 10:25:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:25:55,495 INFO L225 Difference]: With dead ends: 412 [2018-01-31 10:25:55,495 INFO L226 Difference]: Without dead ends: 298 [2018-01-31 10:25:55,497 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2205, Invalid=9351, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 10:25:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-01-31 10:25:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 288. [2018-01-31 10:25:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-01-31 10:25:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 297 transitions. [2018-01-31 10:25:55,500 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 297 transitions. Word has length 246 [2018-01-31 10:25:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:25:55,500 INFO L432 AbstractCegarLoop]: Abstraction has 288 states and 297 transitions. [2018-01-31 10:25:55,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-31 10:25:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 297 transitions. [2018-01-31 10:25:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-31 10:25:55,501 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:25:55,501 INFO L351 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:25:55,501 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 10:25:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1727070277, now seen corresponding path program 18 times [2018-01-31 10:25:55,501 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:25:55,501 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:25:55,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:55,502 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:25:55,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:25:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:25:55,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:25:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-01-31 10:25:56,179 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:25:56,179 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:25:56,183 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:25:56,193 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,195 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,202 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,205 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,237 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,253 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,376 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,490 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,527 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:56,647 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:57,514 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:57,966 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:58,248 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:59,048 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:25:59,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:00,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:00,514 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:00,515 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:00,522 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-01-31 10:26:01,889 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:01,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21] total 60 [2018-01-31 10:26:01,890 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-31 10:26:01,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-31 10:26:01,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2018-01-31 10:26:01,890 INFO L87 Difference]: Start difference. First operand 288 states and 297 transitions. Second operand 60 states. [2018-01-31 10:26:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:03,401 INFO L93 Difference]: Finished difference Result 436 states and 454 transitions. [2018-01-31 10:26:03,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 10:26:03,402 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 262 [2018-01-31 10:26:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:03,403 INFO L225 Difference]: With dead ends: 436 [2018-01-31 10:26:03,403 INFO L226 Difference]: Without dead ends: 314 [2018-01-31 10:26:03,404 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2495, Invalid=10845, Unknown=0, NotChecked=0, Total=13340 [2018-01-31 10:26:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-01-31 10:26:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 304. [2018-01-31 10:26:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-31 10:26:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 313 transitions. [2018-01-31 10:26:03,407 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 313 transitions. Word has length 262 [2018-01-31 10:26:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:03,407 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 313 transitions. [2018-01-31 10:26:03,407 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-31 10:26:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 313 transitions. [2018-01-31 10:26:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-01-31 10:26:03,408 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:03,408 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:03,408 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 10:26:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1269357233, now seen corresponding path program 19 times [2018-01-31 10:26:03,409 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:03,409 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:03,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:03,409 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:03,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:03,419 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:26:04,246 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:04,246 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:04,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:26:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:04,281 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:26:04,361 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:04,361 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 10:26:04,362 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 10:26:04,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 10:26:04,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 10:26:04,362 INFO L87 Difference]: Start difference. First operand 304 states and 313 transitions. Second operand 45 states. [2018-01-31 10:26:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:05,067 INFO L93 Difference]: Finished difference Result 447 states and 464 transitions. [2018-01-31 10:26:05,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 10:26:05,068 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 278 [2018-01-31 10:26:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:05,069 INFO L225 Difference]: With dead ends: 447 [2018-01-31 10:26:05,069 INFO L226 Difference]: Without dead ends: 317 [2018-01-31 10:26:05,069 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 10:26:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-01-31 10:26:05,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 312. [2018-01-31 10:26:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-01-31 10:26:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 321 transitions. [2018-01-31 10:26:05,073 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 321 transitions. Word has length 278 [2018-01-31 10:26:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:05,073 INFO L432 AbstractCegarLoop]: Abstraction has 312 states and 321 transitions. [2018-01-31 10:26:05,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 10:26:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 321 transitions. [2018-01-31 10:26:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-31 10:26:05,074 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:05,074 INFO L351 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:05,074 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 10:26:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash -551000533, now seen corresponding path program 20 times [2018-01-31 10:26:05,074 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:05,074 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:05,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:05,075 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:26:05,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:05,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:26:05,906 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:05,906 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:05,911 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:26:05,922 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:05,948 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:05,960 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:05,963 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:26:06,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:06,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2018-01-31 10:26:06,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-31 10:26:06,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-31 10:26:06,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 10:26:06,046 INFO L87 Difference]: Start difference. First operand 312 states and 321 transitions. Second operand 47 states. [2018-01-31 10:26:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:06,799 INFO L93 Difference]: Finished difference Result 455 states and 472 transitions. [2018-01-31 10:26:06,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-31 10:26:06,800 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 286 [2018-01-31 10:26:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:06,801 INFO L225 Difference]: With dead ends: 455 [2018-01-31 10:26:06,801 INFO L226 Difference]: Without dead ends: 325 [2018-01-31 10:26:06,802 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 10:26:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-01-31 10:26:06,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2018-01-31 10:26:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-01-31 10:26:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 329 transitions. [2018-01-31 10:26:06,805 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 329 transitions. Word has length 286 [2018-01-31 10:26:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:06,805 INFO L432 AbstractCegarLoop]: Abstraction has 320 states and 329 transitions. [2018-01-31 10:26:06,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-31 10:26:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 329 transitions. [2018-01-31 10:26:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-31 10:26:06,806 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:06,807 INFO L351 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:06,807 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 10:26:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash 797510407, now seen corresponding path program 21 times [2018-01-31 10:26:06,807 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:06,807 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:06,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:06,807 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:06,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:06,817 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:26:07,689 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:07,689 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:07,694 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:26:07,704 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,715 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,722 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,738 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,757 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,775 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:07,893 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:08,027 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:08,264 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:08,475 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:08,476 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:08,479 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-01-31 10:26:09,045 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:09,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 23] total 68 [2018-01-31 10:26:09,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-01-31 10:26:09,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-01-31 10:26:09,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=717, Invalid=3839, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 10:26:09,046 INFO L87 Difference]: Start difference. First operand 320 states and 329 transitions. Second operand 68 states. [2018-01-31 10:26:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:10,916 INFO L93 Difference]: Finished difference Result 476 states and 494 transitions. [2018-01-31 10:26:10,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-01-31 10:26:10,917 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 294 [2018-01-31 10:26:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:10,918 INFO L225 Difference]: With dead ends: 476 [2018-01-31 10:26:10,918 INFO L226 Difference]: Without dead ends: 346 [2018-01-31 10:26:10,919 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3245, Invalid=14047, Unknown=0, NotChecked=0, Total=17292 [2018-01-31 10:26:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-01-31 10:26:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 336. [2018-01-31 10:26:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-01-31 10:26:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 345 transitions. [2018-01-31 10:26:10,925 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 345 transitions. Word has length 294 [2018-01-31 10:26:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:10,925 INFO L432 AbstractCegarLoop]: Abstraction has 336 states and 345 transitions. [2018-01-31 10:26:10,925 INFO L433 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-01-31 10:26:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 345 transitions. [2018-01-31 10:26:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-31 10:26:10,926 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:10,926 INFO L351 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:10,927 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 10:26:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1142349329, now seen corresponding path program 22 times [2018-01-31 10:26:10,927 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:10,927 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:10,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:10,927 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:10,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:10,938 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:26:11,798 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:11,798 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:11,803 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:26:12,511 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:12,515 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:26:12,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:12,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2018-01-31 10:26:12,616 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-31 10:26:12,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-31 10:26:12,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-01-31 10:26:12,616 INFO L87 Difference]: Start difference. First operand 336 states and 345 transitions. Second operand 51 states. [2018-01-31 10:26:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:13,719 INFO L93 Difference]: Finished difference Result 487 states and 504 transitions. [2018-01-31 10:26:13,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-31 10:26:13,719 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 310 [2018-01-31 10:26:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:13,720 INFO L225 Difference]: With dead ends: 487 [2018-01-31 10:26:13,720 INFO L226 Difference]: Without dead ends: 349 [2018-01-31 10:26:13,720 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2018-01-31 10:26:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-01-31 10:26:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 344. [2018-01-31 10:26:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-01-31 10:26:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 353 transitions. [2018-01-31 10:26:13,724 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 353 transitions. Word has length 310 [2018-01-31 10:26:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:13,724 INFO L432 AbstractCegarLoop]: Abstraction has 344 states and 353 transitions. [2018-01-31 10:26:13,724 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-31 10:26:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 353 transitions. [2018-01-31 10:26:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-31 10:26:13,725 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:13,725 INFO L351 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:13,725 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 10:26:13,725 INFO L82 PathProgramCache]: Analyzing trace with hash -11686163, now seen corresponding path program 23 times [2018-01-31 10:26:13,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:13,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:13,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:13,726 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:13,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:13,736 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:26:15,212 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:15,212 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:15,217 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:26:15,227 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,229 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,230 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,231 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,234 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,236 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,239 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,243 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,247 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,250 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,261 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,265 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,278 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,299 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,455 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,733 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:15,968 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:16,245 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:16,586 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:16,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:17,067 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:18,280 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:19,620 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:19,624 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:19,631 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:26:19,760 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:19,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2018-01-31 10:26:19,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 10:26:19,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 10:26:19,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:26:19,761 INFO L87 Difference]: Start difference. First operand 344 states and 353 transitions. Second operand 53 states. [2018-01-31 10:26:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:21,239 INFO L93 Difference]: Finished difference Result 495 states and 512 transitions. [2018-01-31 10:26:21,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-31 10:26:21,239 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 318 [2018-01-31 10:26:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:21,240 INFO L225 Difference]: With dead ends: 495 [2018-01-31 10:26:21,240 INFO L226 Difference]: Without dead ends: 357 [2018-01-31 10:26:21,241 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 10:26:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-01-31 10:26:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 352. [2018-01-31 10:26:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-01-31 10:26:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 361 transitions. [2018-01-31 10:26:21,245 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 361 transitions. Word has length 318 [2018-01-31 10:26:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:21,245 INFO L432 AbstractCegarLoop]: Abstraction has 352 states and 361 transitions. [2018-01-31 10:26:21,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 10:26:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 361 transitions. [2018-01-31 10:26:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-01-31 10:26:21,246 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:21,246 INFO L351 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:21,246 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 10:26:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash 696509385, now seen corresponding path program 24 times [2018-01-31 10:26:21,246 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:21,246 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:21,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:21,247 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:21,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:21,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-01-31 10:26:22,506 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:22,506 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:22,511 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:26:22,522 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,524 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,526 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,534 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,541 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,614 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,625 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,809 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:22,952 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:23,194 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:23,419 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:23,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:23,732 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:24,075 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:24,404 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:24,925 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:25,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:26,579 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:28,025 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:30,453 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:31,883 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:26:31,885 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:31,896 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 194 proven. 462 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-01-31 10:26:32,845 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:32,845 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 28] total 79 [2018-01-31 10:26:32,845 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-01-31 10:26:32,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-01-31 10:26:32,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=5183, Unknown=0, NotChecked=0, Total=6162 [2018-01-31 10:26:32,846 INFO L87 Difference]: Start difference. First operand 352 states and 361 transitions. Second operand 79 states. [2018-01-31 10:26:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:35,638 INFO L93 Difference]: Finished difference Result 516 states and 534 transitions. [2018-01-31 10:26:35,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-01-31 10:26:35,639 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 326 [2018-01-31 10:26:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:35,640 INFO L225 Difference]: With dead ends: 516 [2018-01-31 10:26:35,640 INFO L226 Difference]: Without dead ends: 378 [2018-01-31 10:26:35,641 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5776 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4842, Invalid=22548, Unknown=0, NotChecked=0, Total=27390 [2018-01-31 10:26:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-01-31 10:26:35,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 368. [2018-01-31 10:26:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-01-31 10:26:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 377 transitions. [2018-01-31 10:26:35,645 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 377 transitions. Word has length 326 [2018-01-31 10:26:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:35,645 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 377 transitions. [2018-01-31 10:26:35,645 INFO L433 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-01-31 10:26:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 377 transitions. [2018-01-31 10:26:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-01-31 10:26:35,646 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:35,646 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 10:26:35,646 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 10:26:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -632593197, now seen corresponding path program 25 times [2018-01-31 10:26:35,647 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:35,647 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:35,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:35,657 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:35,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:35,668 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-01-31 10:26:36,849 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:36,849 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 10:26:36,853 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:36,888 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-01-31 10:26:36,975 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:36,976 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-31 10:26:36,976 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 10:26:36,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 10:26:36,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:26:36,977 INFO L87 Difference]: Start difference. First operand 368 states and 377 transitions. Second operand 57 states. [2018-01-31 10:26:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:38,078 INFO L93 Difference]: Finished difference Result 527 states and 544 transitions. [2018-01-31 10:26:38,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-31 10:26:38,078 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 342 [2018-01-31 10:26:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:38,079 INFO L225 Difference]: With dead ends: 527 [2018-01-31 10:26:38,079 INFO L226 Difference]: Without dead ends: 381 [2018-01-31 10:26:38,080 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 10:26:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-01-31 10:26:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 376. [2018-01-31 10:26:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-01-31 10:26:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 385 transitions. [2018-01-31 10:26:38,084 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 385 transitions. Word has length 342 [2018-01-31 10:26:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:38,084 INFO L432 AbstractCegarLoop]: Abstraction has 376 states and 385 transitions. [2018-01-31 10:26:38,084 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 10:26:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 385 transitions. [2018-01-31 10:26:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-01-31 10:26:38,085 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:38,085 INFO L351 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:38,085 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 10:26:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1415068241, now seen corresponding path program 26 times [2018-01-31 10:26:38,085 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:38,085 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:38,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:38,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:26:38,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:38,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3414 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-01-31 10:26:39,265 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:39,265 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:39,270 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:26:39,282 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:39,302 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:39,306 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:39,308 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3414 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-01-31 10:26:39,434 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:39,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2018-01-31 10:26:39,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-01-31 10:26:39,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-01-31 10:26:39,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2018-01-31 10:26:39,436 INFO L87 Difference]: Start difference. First operand 376 states and 385 transitions. Second operand 59 states. [2018-01-31 10:26:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:40,691 INFO L93 Difference]: Finished difference Result 535 states and 552 transitions. [2018-01-31 10:26:40,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-01-31 10:26:40,691 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 350 [2018-01-31 10:26:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:40,692 INFO L225 Difference]: With dead ends: 535 [2018-01-31 10:26:40,692 INFO L226 Difference]: Without dead ends: 389 [2018-01-31 10:26:40,693 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2018-01-31 10:26:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-01-31 10:26:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 384. [2018-01-31 10:26:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-01-31 10:26:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 393 transitions. [2018-01-31 10:26:40,697 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 393 transitions. Word has length 350 [2018-01-31 10:26:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:40,697 INFO L432 AbstractCegarLoop]: Abstraction has 384 states and 393 transitions. [2018-01-31 10:26:40,697 INFO L433 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-01-31 10:26:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 393 transitions. [2018-01-31 10:26:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-01-31 10:26:40,698 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:40,698 INFO L351 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:40,698 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 10:26:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1970506379, now seen corresponding path program 27 times [2018-01-31 10:26:40,698 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:40,699 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:40,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:40,699 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:40,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:40,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3632 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-01-31 10:26:42,248 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:42,248 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:42,253 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:26:42,265 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,267 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,270 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,278 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,291 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,303 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,312 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,326 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,478 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:42,768 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:43,043 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:26:43,044 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:43,047 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3632 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-01-31 10:26:43,927 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:43,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 27] total 84 [2018-01-31 10:26:43,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-01-31 10:26:43,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-01-31 10:26:43,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1093, Invalid=5879, Unknown=0, NotChecked=0, Total=6972 [2018-01-31 10:26:43,928 INFO L87 Difference]: Start difference. First operand 384 states and 393 transitions. Second operand 84 states. [2018-01-31 10:26:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:46,641 INFO L93 Difference]: Finished difference Result 556 states and 574 transitions. [2018-01-31 10:26:46,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-01-31 10:26:46,641 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 358 [2018-01-31 10:26:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:46,642 INFO L225 Difference]: With dead ends: 556 [2018-01-31 10:26:46,642 INFO L226 Difference]: Without dead ends: 410 [2018-01-31 10:26:46,643 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5423 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5045, Invalid=21687, Unknown=0, NotChecked=0, Total=26732 [2018-01-31 10:26:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-31 10:26:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 400. [2018-01-31 10:26:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-01-31 10:26:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 409 transitions. [2018-01-31 10:26:46,647 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 409 transitions. Word has length 358 [2018-01-31 10:26:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:46,647 INFO L432 AbstractCegarLoop]: Abstraction has 400 states and 409 transitions. [2018-01-31 10:26:46,647 INFO L433 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-01-31 10:26:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 409 transitions. [2018-01-31 10:26:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-01-31 10:26:46,648 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:46,649 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:46,649 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 10:26:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash -444155499, now seen corresponding path program 28 times [2018-01-31 10:26:46,649 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:46,649 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:46,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:46,649 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:46,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:46,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3956 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-01-31 10:26:47,961 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:47,961 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:47,966 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:26:48,680 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:26:48,684 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:26:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3956 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-01-31 10:26:48,783 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:26:48,784 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2018-01-31 10:26:48,784 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-31 10:26:48,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-31 10:26:48,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2018-01-31 10:26:48,785 INFO L87 Difference]: Start difference. First operand 400 states and 409 transitions. Second operand 63 states. [2018-01-31 10:26:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:26:50,097 INFO L93 Difference]: Finished difference Result 567 states and 584 transitions. [2018-01-31 10:26:50,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-01-31 10:26:50,098 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 374 [2018-01-31 10:26:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:26:50,099 INFO L225 Difference]: With dead ends: 567 [2018-01-31 10:26:50,099 INFO L226 Difference]: Without dead ends: 413 [2018-01-31 10:26:50,099 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2018-01-31 10:26:50,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-01-31 10:26:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 408. [2018-01-31 10:26:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2018-01-31 10:26:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 417 transitions. [2018-01-31 10:26:50,106 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 417 transitions. Word has length 374 [2018-01-31 10:26:50,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:26:50,107 INFO L432 AbstractCegarLoop]: Abstraction has 408 states and 417 transitions. [2018-01-31 10:26:50,107 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-31 10:26:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 417 transitions. [2018-01-31 10:26:50,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-01-31 10:26:50,108 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:26:50,108 INFO L351 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:26:50,108 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 10:26:50,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1388882545, now seen corresponding path program 29 times [2018-01-31 10:26:50,108 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:26:50,108 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:26:50,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:50,109 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:26:50,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:26:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:26:50,123 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:26:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4190 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-01-31 10:26:51,606 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:26:51,606 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:26:51,610 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:26:51,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,631 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,634 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,637 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,639 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,646 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,650 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,654 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,670 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,685 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,699 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,721 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,742 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,758 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:51,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:52,305 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:53,084 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:53,270 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:54,027 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:56,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:26:57,191 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:27:02,721 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:27:06,074 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:27:12,121 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-01-31 10:27:18,734 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown