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/sum60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 10:36:11,017 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 10:36:11,018 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 10:36:11,028 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 10:36:11,029 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 10:36:11,029 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 10:36:11,030 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 10:36:11,031 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 10:36:11,032 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 10:36:11,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 10:36:11,033 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 10:36:11,033 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 10:36:11,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 10:36:11,034 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 10:36:11,034 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 10:36:11,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 10:36:11,036 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 10:36:11,037 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 10:36:11,038 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 10:36:11,039 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 10:36:11,040 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 10:36:11,040 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 10:36:11,040 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 10:36:11,041 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 10:36:11,041 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 10:36:11,042 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 10:36:11,042 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 10:36:11,042 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 10:36:11,042 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 10:36:11,042 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 10:36:11,043 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 10:36:11,043 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 10:36:11,048 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 10:36:11,048 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 10:36:11,048 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 10:36:11,048 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 10:36:11,049 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 10:36:11,049 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 10:36:11,049 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 10:36:11,049 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 10:36:11,049 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 10:36:11,049 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 10:36:11,049 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 10:36:11,050 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 10:36:11,050 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 10:36:11,051 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 10:36:11,051 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 10:36:11,052 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 10:36:11,052 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 10:36:11,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 10:36:11,080 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 10:36:11,082 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 10:36:11,083 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 10:36:11,083 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 10:36:11,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum60_true-unreach-call.i [2018-01-31 10:36:11,146 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 10:36:11,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 10:36:11,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 10:36:11,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 10:36:11,151 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 10:36:11,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d35538b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11, skipping insertion in model container [2018-01-31 10:36:11,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,162 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:36:11,171 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:36:11,244 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:36:11,257 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:36:11,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11 WrapperNode [2018-01-31 10:36:11,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 10:36:11,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 10:36:11,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 10:36:11,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 10:36:11,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 10:36:11,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 10:36:11,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 10:36:11,281 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 10:36:11,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (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 10:36:11,322 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 10:36:11,322 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 10:36:11,322 INFO L136 BoogieDeclarations]: Found implementation of procedure sum [2018-01-31 10:36:11,322 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 10:36:11,322 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 10:36:11,322 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 10:36:11,322 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 10:36:11,322 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure sum [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 10:36:11,323 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 10:36:11,710 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 10:36:11,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:36:11 BoogieIcfgContainer [2018-01-31 10:36:11,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 10:36:11,711 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 10:36:11,711 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 10:36:11,711 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 10:36:11,713 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:36:11" (1/1) ... [2018-01-31 10:36:11,718 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 10:36:11,718 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 10:36:11,719 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 10:36:11,742 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 10:36:11,759 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 10:36:11,793 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 10:37:41,463 INFO L314 AbstractInterpreter]: Visited 91 different actions 690 times. Merged at 63 different actions 327 times. Widened at 1 different actions 1 times. Found 48 fixpoints after 13 different actions. Largest state had 68 variables. [2018-01-31 10:37:41,465 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 10:37:41,470 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 10 [2018-01-31 10:37:41,471 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 10:37:41,471 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 10:37:41,471 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_11| |v_main_~#x~5.base_7|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29'''''')) ((select (select |v_#memory_int_12| |v_main_~#x~5.base_9|) |v_main_~#x~5.offset_9|), at (SUMMARY for call #t~mem11 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L31)) ((select (select |v_#memory_int_13| |v_main_~#x~5.base_10|) (+ (* 4 v_main_~i~7_4) |v_main_~#x~5.offset_10| 4)), at (SUMMARY for call #t~mem14 := read~int(~#x~5.base, ~#x~5.offset + (~i~7 + 1) * 4, 4); srcloc: L33)) ((select (select |v_#memory_int_7| |v_main_~#x~5.base_5|) (+ |v_main_~#x~5.offset_5| 4)), at (SUMMARY for call #t~mem8 := read~int(~#x~5.base, ~#x~5.offset + 4, 4); srcloc: L29''')) ((select (select |v_#memory_int_3| v_sum_~x.base_2) (+ (* 4 v_sum_~i~3_5) v_sum_~x.offset_2)), at (SUMMARY for call #t~mem1 := read~int(~x.base, ~x.offset + ~i~3 * 4, 4); srcloc: L10)) ((select |v_#memory_int_15| |v_main_~#x~5.base_11|), at (SUMMARY for call write~int(#t~mem14, ~#x~5.base, ~#x~5.offset + ~i~7 * 4, 4); srcloc: L33')) ((select |v_#memory_int_9| |v_main_~#x~5.base_6|), at (SUMMARY for call write~int(#t~mem8, ~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29'''')) ((select |v_#memory_int_17| |v_main_~#x~5.base_12|), at (SUMMARY for call write~int(~temp~5, ~#x~5.base, ~#x~5.offset + 236, 4); srcloc: L32''''''')) ((select |v_#memory_int_5| |v_main_~#x~5.base_2|), at (SUMMARY for call write~int(#t~nondet3, ~#x~5.base, ~#x~5.offset + ~i~6 * 4, 4); srcloc: L24')) ((select (select |v_#memory_int_6| |v_main_~#x~5.base_4|) |v_main_~#x~5.offset_4|), at (SUMMARY for call #t~mem6 := read~int(~#x~5.base, ~#x~5.offset + 0, 4); srcloc: L29)) [2018-01-31 10:37:41,488 INFO L547 PartitionManager]: partitioning result: [2018-01-31 10:37:41,489 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 10:37:41,489 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 10:37:41,489 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:37:41,489 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:37:41,489 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 10:37:41,489 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 5 [2018-01-31 10:37:41,489 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 10:37:41,490 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 10:37:41,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:37:41 BasicIcfg [2018-01-31 10:37:41,503 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 10:37:41,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 10:37:41,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 10:37:41,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 10:37:41,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:36:11" (1/4) ... [2018-01-31 10:37:41,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467bfcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:37:41, skipping insertion in model container [2018-01-31 10:37:41,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:36:11" (2/4) ... [2018-01-31 10:37:41,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467bfcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:37:41, skipping insertion in model container [2018-01-31 10:37:41,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:36:11" (3/4) ... [2018-01-31 10:37:41,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467bfcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:37:41, skipping insertion in model container [2018-01-31 10:37:41,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:37:41" (4/4) ... [2018-01-31 10:37:41,508 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 10:37:41,513 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 10:37:41,517 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 10:37:41,538 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 10:37:41,538 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 10:37:41,538 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 10:37:41,538 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 10:37:41,538 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 10:37:41,538 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 10:37:41,538 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 10:37:41,538 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 10:37:41,539 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 10:37:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-31 10:37:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 10:37:41,551 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:41,551 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 10:37:41,551 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 10:37:41,554 INFO L82 PathProgramCache]: Analyzing trace with hash 119124891, now seen corresponding path program 1 times [2018-01-31 10:37:41,555 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:41,555 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:41,584 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:41,584 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:41,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:41,606 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:41,625 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 10:37:41,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:37:41,627 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 10:37:41,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 10:37:41,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 10:37:41,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:37:41,635 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-31 10:37:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:41,650 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2018-01-31 10:37:41,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 10:37:41,650 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-31 10:37:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:41,656 INFO L225 Difference]: With dead ends: 136 [2018-01-31 10:37:41,656 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 10:37:41,658 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 10:37:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 10:37:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 10:37:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 10:37:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2018-01-31 10:37:41,682 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2018-01-31 10:37:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:41,683 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2018-01-31 10:37:41,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 10:37:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2018-01-31 10:37:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-31 10:37:41,684 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:41,684 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 10:37:41,684 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 10:37:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash 320115213, now seen corresponding path program 1 times [2018-01-31 10:37:41,685 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:41,685 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:41,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:41,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:41,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:41,693 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:41,747 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 10:37:41,747 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:37:41,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 10:37:41,748 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 10:37:41,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 10:37:41,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 10:37:41,749 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 3 states. [2018-01-31 10:37:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:41,834 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2018-01-31 10:37:41,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 10:37:41,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-01-31 10:37:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:41,835 INFO L225 Difference]: With dead ends: 129 [2018-01-31 10:37:41,835 INFO L226 Difference]: Without dead ends: 78 [2018-01-31 10:37:41,836 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 10:37:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-31 10:37:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-31 10:37:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-31 10:37:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2018-01-31 10:37:41,843 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 38 [2018-01-31 10:37:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:41,843 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2018-01-31 10:37:41,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 10:37:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2018-01-31 10:37:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 10:37:41,844 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:41,844 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 10:37:41,844 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 10:37:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1650744741, now seen corresponding path program 1 times [2018-01-31 10:37:41,844 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:41,844 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:41,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:41,845 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:41,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:41,857 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:41,946 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 10:37:41,946 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:41,946 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) [2018-01-31 10:37:41,961 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:37:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:41,995 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:42,102 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 10:37:42,120 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 10:37:42,120 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-31 10:37:42,120 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 10:37:42,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 10:37:42,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 10:37:42,121 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 6 states. [2018-01-31 10:37:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:42,287 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2018-01-31 10:37:42,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 10:37:42,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-01-31 10:37:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:42,288 INFO L225 Difference]: With dead ends: 144 [2018-01-31 10:37:42,288 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 10:37:42,288 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 10:37:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 10:37:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-31 10:37:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 10:37:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2018-01-31 10:37:42,292 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 46 [2018-01-31 10:37:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:42,292 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2018-01-31 10:37:42,292 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 10:37:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2018-01-31 10:37:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-31 10:37:42,293 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:42,293 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 10:37:42,294 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 10:37:42,294 INFO L82 PathProgramCache]: Analyzing trace with hash -621479573, now seen corresponding path program 1 times [2018-01-31 10:37:42,294 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:42,294 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:42,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:42,295 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:42,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:42,304 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:42,370 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 10:37:42,370 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:42,370 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:37:42,380 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:42,402 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:42,484 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 10:37:42,510 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:42,510 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-31 10:37:42,511 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 10:37:42,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 10:37:42,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 10:37:42,511 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 10 states. [2018-01-31 10:37:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:42,687 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2018-01-31 10:37:42,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 10:37:42,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-01-31 10:37:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:42,688 INFO L225 Difference]: With dead ends: 162 [2018-01-31 10:37:42,688 INFO L226 Difference]: Without dead ends: 109 [2018-01-31 10:37:42,689 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-31 10:37:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-01-31 10:37:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2018-01-31 10:37:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-31 10:37:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2018-01-31 10:37:42,693 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 62 [2018-01-31 10:37:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:42,693 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2018-01-31 10:37:42,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 10:37:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2018-01-31 10:37:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-31 10:37:42,694 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:42,695 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 10:37:42,695 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 10:37:42,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1813102799, now seen corresponding path program 2 times [2018-01-31 10:37:42,695 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:42,695 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:42,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:42,695 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:42,696 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:42,709 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:42,911 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 10:37:42,911 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:42,911 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 10:37:42,916 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:37:42,925 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:42,941 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:42,948 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:42,950 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:43,079 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 10:37:43,095 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:43,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-31 10:37:43,096 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-31 10:37:43,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-31 10:37:43,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-31 10:37:43,096 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 14 states. [2018-01-31 10:37:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:43,416 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2018-01-31 10:37:43,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 10:37:43,416 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-01-31 10:37:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:43,417 INFO L225 Difference]: With dead ends: 186 [2018-01-31 10:37:43,417 INFO L226 Difference]: Without dead ends: 125 [2018-01-31 10:37:43,417 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-31 10:37:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-31 10:37:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2018-01-31 10:37:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-31 10:37:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2018-01-31 10:37:43,421 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 78 [2018-01-31 10:37:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:43,421 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2018-01-31 10:37:43,421 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-31 10:37:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2018-01-31 10:37:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-31 10:37:43,423 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:43,423 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 10:37:43,423 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 10:37:43,423 INFO L82 PathProgramCache]: Analyzing trace with hash -244961545, now seen corresponding path program 3 times [2018-01-31 10:37:43,423 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:43,423 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:43,424 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:43,424 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:43,424 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:43,435 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:43,764 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 10:37:43,764 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:43,764 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 10:37:43,769 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:37:43,776 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:43,785 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:43,798 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:43,815 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:43,826 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:43,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:43,890 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 10:37:43,907 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:43,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-31 10:37:43,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 10:37:43,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 10:37:43,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-31 10:37:43,908 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand 18 states. [2018-01-31 10:37:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:44,161 INFO L93 Difference]: Finished difference Result 210 states and 226 transitions. [2018-01-31 10:37:44,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 10:37:44,161 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2018-01-31 10:37:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:44,162 INFO L225 Difference]: With dead ends: 210 [2018-01-31 10:37:44,162 INFO L226 Difference]: Without dead ends: 141 [2018-01-31 10:37:44,162 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2018-01-31 10:37:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-01-31 10:37:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2018-01-31 10:37:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-31 10:37:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2018-01-31 10:37:44,167 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 94 [2018-01-31 10:37:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:44,167 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2018-01-31 10:37:44,167 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 10:37:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2018-01-31 10:37:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-31 10:37:44,168 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:44,168 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 10:37:44,168 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 10:37:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash 561170621, now seen corresponding path program 4 times [2018-01-31 10:37:44,168 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:44,168 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:44,169 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:44,169 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:44,169 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:44,179 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:44,280 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 10:37:44,281 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:44,281 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:37:44,288 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:37:44,307 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:44,309 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:44,332 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 10:37:44,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:44,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-31 10:37:44,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-31 10:37:44,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-31 10:37:44,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-31 10:37:44,350 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 15 states. [2018-01-31 10:37:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:44,460 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-31 10:37:44,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-31 10:37:44,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2018-01-31 10:37:44,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:44,461 INFO L225 Difference]: With dead ends: 221 [2018-01-31 10:37:44,461 INFO L226 Difference]: Without dead ends: 144 [2018-01-31 10:37:44,461 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-31 10:37:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-31 10:37:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2018-01-31 10:37:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-31 10:37:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2018-01-31 10:37:44,471 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 110 [2018-01-31 10:37:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:44,472 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2018-01-31 10:37:44,472 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-31 10:37:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2018-01-31 10:37:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-31 10:37:44,472 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:44,473 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 10:37:44,473 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 10:37:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1493220437, now seen corresponding path program 5 times [2018-01-31 10:37:44,473 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:44,473 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:44,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:44,473 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:44,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:44,485 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:44,822 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 10:37:44,822 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:44,822 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 10:37:44,827 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:37:44,835 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,836 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,840 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,848 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:44,883 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:44,885 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:45,045 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 10:37:45,062 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:45,062 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-31 10:37:45,062 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-31 10:37:45,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-31 10:37:45,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-31 10:37:45,062 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 24 states. [2018-01-31 10:37:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:45,419 INFO L93 Difference]: Finished difference Result 242 states and 258 transitions. [2018-01-31 10:37:45,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 10:37:45,424 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2018-01-31 10:37:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:45,425 INFO L225 Difference]: With dead ends: 242 [2018-01-31 10:37:45,425 INFO L226 Difference]: Without dead ends: 165 [2018-01-31 10:37:45,425 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-31 10:37:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-31 10:37:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2018-01-31 10:37:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-31 10:37:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2018-01-31 10:37:45,429 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 118 [2018-01-31 10:37:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:45,429 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2018-01-31 10:37:45,429 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-31 10:37:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2018-01-31 10:37:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-31 10:37:45,429 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:45,430 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 10:37:45,430 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 10:37:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1135751141, now seen corresponding path program 6 times [2018-01-31 10:37:45,430 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:45,430 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:45,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:45,430 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:45,431 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:45,440 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:45,577 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 10:37:45,577 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:45,577 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 10:37:45,582 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:37:45,590 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,592 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,595 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,597 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,602 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,610 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,620 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,626 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:45,627 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:45,629 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:45,789 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 10:37:45,806 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:45,806 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2018-01-31 10:37:45,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-31 10:37:45,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-31 10:37:45,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2018-01-31 10:37:45,807 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 28 states. [2018-01-31 10:37:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:46,322 INFO L93 Difference]: Finished difference Result 266 states and 282 transitions. [2018-01-31 10:37:46,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 10:37:46,322 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 134 [2018-01-31 10:37:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:46,323 INFO L225 Difference]: With dead ends: 266 [2018-01-31 10:37:46,323 INFO L226 Difference]: Without dead ends: 181 [2018-01-31 10:37:46,324 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 10:37:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-31 10:37:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2018-01-31 10:37:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-31 10:37:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 179 transitions. [2018-01-31 10:37:46,327 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 179 transitions. Word has length 134 [2018-01-31 10:37:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:46,327 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 179 transitions. [2018-01-31 10:37:46,327 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-31 10:37:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 179 transitions. [2018-01-31 10:37:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-31 10:37:46,328 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:46,328 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 10:37:46,328 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 10:37:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -423916063, now seen corresponding path program 7 times [2018-01-31 10:37:46,328 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:46,329 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:46,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:46,329 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:46,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:46,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:46,503 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 10:37:46,503 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:46,503 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 10:37:46,508 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:46,525 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:46,550 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 10:37:46,566 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:46,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-31 10:37:46,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 10:37:46,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 10:37:46,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-31 10:37:46,567 INFO L87 Difference]: Start difference. First operand 171 states and 179 transitions. Second operand 21 states. [2018-01-31 10:37:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:46,796 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2018-01-31 10:37:46,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-31 10:37:46,798 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2018-01-31 10:37:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:46,799 INFO L225 Difference]: With dead ends: 277 [2018-01-31 10:37:46,799 INFO L226 Difference]: Without dead ends: 184 [2018-01-31 10:37:46,799 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 10:37:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-31 10:37:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2018-01-31 10:37:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 10:37:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2018-01-31 10:37:46,802 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 150 [2018-01-31 10:37:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:46,802 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2018-01-31 10:37:46,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 10:37:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2018-01-31 10:37:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-31 10:37:46,803 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:46,804 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 10:37:46,804 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 10:37:46,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1429473657, now seen corresponding path program 8 times [2018-01-31 10:37:46,804 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:46,804 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:46,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:46,804 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:46,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:46,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:46,997 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 10:37:46,997 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:46,998 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 10:37:47,002 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:37:47,010 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:47,022 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:47,024 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:47,025 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:47,051 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 10:37:47,067 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:47,068 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-31 10:37:47,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-31 10:37:47,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-31 10:37:47,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-31 10:37:47,068 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 23 states. [2018-01-31 10:37:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:47,385 INFO L93 Difference]: Finished difference Result 285 states and 300 transitions. [2018-01-31 10:37:47,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-31 10:37:47,386 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 158 [2018-01-31 10:37:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:47,386 INFO L225 Difference]: With dead ends: 285 [2018-01-31 10:37:47,386 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 10:37:47,387 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:37:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 10:37:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 10:37:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 10:37:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 195 transitions. [2018-01-31 10:37:47,390 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 195 transitions. Word has length 158 [2018-01-31 10:37:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:47,390 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 195 transitions. [2018-01-31 10:37:47,390 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-31 10:37:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 195 transitions. [2018-01-31 10:37:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-31 10:37:47,391 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:47,392 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 10:37:47,392 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 10:37:47,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1247580911, now seen corresponding path program 9 times [2018-01-31 10:37:47,392 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:47,392 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:47,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:47,392 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:47,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:47,401 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:47,620 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 10:37:47,620 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:47,620 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 10:37:47,625 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:37:47,633 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,635 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,638 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,651 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,664 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,708 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,836 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:47,837 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:47,839 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-01-31 10:37:48,099 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:48,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2018-01-31 10:37:48,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-31 10:37:48,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-31 10:37:48,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2018-01-31 10:37:48,100 INFO L87 Difference]: Start difference. First operand 187 states and 195 transitions. Second operand 36 states. [2018-01-31 10:37:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:48,930 INFO L93 Difference]: Finished difference Result 306 states and 322 transitions. [2018-01-31 10:37:48,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 10:37:48,930 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 166 [2018-01-31 10:37:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:48,931 INFO L225 Difference]: With dead ends: 306 [2018-01-31 10:37:48,931 INFO L226 Difference]: Without dead ends: 213 [2018-01-31 10:37:48,932 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=845, Invalid=3711, Unknown=0, NotChecked=0, Total=4556 [2018-01-31 10:37:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-01-31 10:37:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2018-01-31 10:37:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-31 10:37:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2018-01-31 10:37:48,934 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 166 [2018-01-31 10:37:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:48,935 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2018-01-31 10:37:48,935 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-31 10:37:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2018-01-31 10:37:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-31 10:37:48,936 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:48,936 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 10:37:48,936 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 10:37:48,936 INFO L82 PathProgramCache]: Analyzing trace with hash -578587433, now seen corresponding path program 10 times [2018-01-31 10:37:48,936 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:48,936 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:48,936 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:48,936 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:48,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:48,946 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:49,380 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 10:37:49,380 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:49,380 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 10:37:49,385 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:37:49,472 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:49,474 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:49,504 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 10:37:49,537 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:49,537 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-31 10:37:49,537 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-31 10:37:49,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-31 10:37:49,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-31 10:37:49,538 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 27 states. [2018-01-31 10:37:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:50,054 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2018-01-31 10:37:50,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 10:37:50,054 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2018-01-31 10:37:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:50,055 INFO L225 Difference]: With dead ends: 317 [2018-01-31 10:37:50,055 INFO L226 Difference]: Without dead ends: 216 [2018-01-31 10:37:50,055 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 10:37:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-31 10:37:50,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2018-01-31 10:37:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-31 10:37:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 219 transitions. [2018-01-31 10:37:50,058 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 219 transitions. Word has length 182 [2018-01-31 10:37:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:50,058 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 219 transitions. [2018-01-31 10:37:50,058 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-31 10:37:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 219 transitions. [2018-01-31 10:37:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-31 10:37:50,059 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:50,059 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 10:37:50,059 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 10:37:50,059 INFO L82 PathProgramCache]: Analyzing trace with hash -882405265, now seen corresponding path program 11 times [2018-01-31 10:37:50,059 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:50,059 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:50,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:50,060 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:50,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:50,069 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:50,533 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 10:37:50,534 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:50,534 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:37:50,538 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:37:50,545 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,546 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,547 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,550 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,552 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,604 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,628 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,650 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,703 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:50,713 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:50,716 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:50,748 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 10:37:50,767 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:50,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-31 10:37:50,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:37:50,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:37:50,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:37:50,768 INFO L87 Difference]: Start difference. First operand 211 states and 219 transitions. Second operand 29 states. [2018-01-31 10:37:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:51,401 INFO L93 Difference]: Finished difference Result 325 states and 340 transitions. [2018-01-31 10:37:51,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-31 10:37:51,401 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2018-01-31 10:37:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:51,402 INFO L225 Difference]: With dead ends: 325 [2018-01-31 10:37:51,402 INFO L226 Difference]: Without dead ends: 224 [2018-01-31 10:37:51,402 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:37:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-31 10:37:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2018-01-31 10:37:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 10:37:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2018-01-31 10:37:51,405 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 190 [2018-01-31 10:37:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:51,405 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2018-01-31 10:37:51,405 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:37:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2018-01-31 10:37:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-31 10:37:51,406 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:51,406 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 10:37:51,406 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 10:37:51,406 INFO L82 PathProgramCache]: Analyzing trace with hash -710765561, now seen corresponding path program 12 times [2018-01-31 10:37:51,406 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:51,406 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:51,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:51,407 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:51,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:51,415 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:51,725 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 10:37:51,725 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:51,725 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 10:37:51,730 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:37:51,741 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,746 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,751 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,786 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,853 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:51,949 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:52,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:52,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:52,416 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:52,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:52,839 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:37:52,841 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:52,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:52,878 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 10:37:52,896 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:52,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-31 10:37:52,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-31 10:37:52,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-31 10:37:52,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-31 10:37:52,897 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand 31 states. [2018-01-31 10:37:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:53,424 INFO L93 Difference]: Finished difference Result 333 states and 348 transitions. [2018-01-31 10:37:53,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-31 10:37:53,425 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 198 [2018-01-31 10:37:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:53,425 INFO L225 Difference]: With dead ends: 333 [2018-01-31 10:37:53,425 INFO L226 Difference]: Without dead ends: 232 [2018-01-31 10:37:53,426 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:37:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-31 10:37:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2018-01-31 10:37:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-31 10:37:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2018-01-31 10:37:53,429 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 198 [2018-01-31 10:37:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:53,429 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2018-01-31 10:37:53,429 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-31 10:37:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2018-01-31 10:37:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-31 10:37:53,430 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:53,430 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 10:37:53,430 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 10:37:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1254915999, now seen corresponding path program 13 times [2018-01-31 10:37:53,430 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:53,430 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:53,432 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:53,432 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:53,432 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:53,441 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:54,295 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 10:37:54,295 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:54,295 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 10:37:54,301 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:54,325 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:54,366 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 10:37:54,384 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:54,384 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-31 10:37:54,384 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:37:54,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:37:54,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:37:54,384 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 33 states. [2018-01-31 10:37:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:54,791 INFO L93 Difference]: Finished difference Result 341 states and 356 transitions. [2018-01-31 10:37:54,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-31 10:37:54,792 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2018-01-31 10:37:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:54,792 INFO L225 Difference]: With dead ends: 341 [2018-01-31 10:37:54,793 INFO L226 Difference]: Without dead ends: 240 [2018-01-31 10:37:54,794 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 10:37:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-31 10:37:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2018-01-31 10:37:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 10:37:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 243 transitions. [2018-01-31 10:37:54,805 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 243 transitions. Word has length 206 [2018-01-31 10:37:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:54,805 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 243 transitions. [2018-01-31 10:37:54,805 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:37:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 243 transitions. [2018-01-31 10:37:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-31 10:37:54,806 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:54,806 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 10:37:54,806 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 10:37:54,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1635603255, now seen corresponding path program 14 times [2018-01-31 10:37:54,806 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:54,807 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:54,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:54,807 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:37:54,807 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:54,816 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:56,665 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 10:37:56,665 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:56,665 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 10:37:56,671 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:37:56,680 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:56,692 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:37:56,694 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:56,696 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:56,738 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 10:37:56,755 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:56,755 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-31 10:37:56,756 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-31 10:37:56,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-31 10:37:56,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 10:37:56,756 INFO L87 Difference]: Start difference. First operand 235 states and 243 transitions. Second operand 35 states. [2018-01-31 10:37:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:57,413 INFO L93 Difference]: Finished difference Result 349 states and 364 transitions. [2018-01-31 10:37:57,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-31 10:37:57,413 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 214 [2018-01-31 10:37:57,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:57,414 INFO L225 Difference]: With dead ends: 349 [2018-01-31 10:37:57,414 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 10:37:57,414 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 10:37:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 10:37:57,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 10:37:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 10:37:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 251 transitions. [2018-01-31 10:37:57,417 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 251 transitions. Word has length 214 [2018-01-31 10:37:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:57,418 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 251 transitions. [2018-01-31 10:37:57,418 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-31 10:37:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 251 transitions. [2018-01-31 10:37:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-31 10:37:57,418 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:57,418 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 10:37:57,418 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 10:37:57,418 INFO L82 PathProgramCache]: Analyzing trace with hash 944574159, now seen corresponding path program 15 times [2018-01-31 10:37:57,419 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:57,419 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:57,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:57,419 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:57,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:57,428 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:37:58,191 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 10:37:58,191 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:37:58,191 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 10:37:58,196 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:37:58,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,208 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,211 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,223 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,282 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,334 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,521 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:37:58,522 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:37:58,524 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:37:58,798 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 10:37:58,816 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:37:58,816 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2018-01-31 10:37:58,817 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-31 10:37:58,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-31 10:37:58,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 10:37:58,817 INFO L87 Difference]: Start difference. First operand 243 states and 251 transitions. Second operand 50 states. [2018-01-31 10:37:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:37:59,899 INFO L93 Difference]: Finished difference Result 370 states and 386 transitions. [2018-01-31 10:37:59,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 10:37:59,899 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 222 [2018-01-31 10:37:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:37:59,900 INFO L225 Difference]: With dead ends: 370 [2018-01-31 10:37:59,900 INFO L226 Difference]: Without dead ends: 269 [2018-01-31 10:37:59,902 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1760, Invalid=7360, Unknown=0, NotChecked=0, Total=9120 [2018-01-31 10:37:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-31 10:37:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 259. [2018-01-31 10:37:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-31 10:37:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 267 transitions. [2018-01-31 10:37:59,905 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 267 transitions. Word has length 222 [2018-01-31 10:37:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:37:59,905 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 267 transitions. [2018-01-31 10:37:59,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-31 10:37:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 267 transitions. [2018-01-31 10:37:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-31 10:37:59,906 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:37:59,906 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 10:37:59,906 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 10:37:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash -696856427, now seen corresponding path program 16 times [2018-01-31 10:37:59,907 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:37:59,907 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:37:59,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:59,907 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:37:59,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:37:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:37:59,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:00,692 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 10:38:00,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:00,692 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 10:38:00,697 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:38:00,816 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:00,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:00,862 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 10:38:00,879 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:00,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-31 10:38:00,880 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-31 10:38:00,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-31 10:38:00,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-31 10:38:00,880 INFO L87 Difference]: Start difference. First operand 259 states and 267 transitions. Second operand 39 states. [2018-01-31 10:38:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:01,434 INFO L93 Difference]: Finished difference Result 381 states and 396 transitions. [2018-01-31 10:38:01,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-31 10:38:01,434 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 238 [2018-01-31 10:38:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:01,435 INFO L225 Difference]: With dead ends: 381 [2018-01-31 10:38:01,435 INFO L226 Difference]: Without dead ends: 272 [2018-01-31 10:38:01,436 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 10:38:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-31 10:38:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2018-01-31 10:38:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-31 10:38:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 275 transitions. [2018-01-31 10:38:01,439 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 275 transitions. Word has length 238 [2018-01-31 10:38:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:01,439 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 275 transitions. [2018-01-31 10:38:01,439 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-31 10:38:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 275 transitions. [2018-01-31 10:38:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-31 10:38:01,440 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:01,440 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 10:38:01,440 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 10:38:01,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1254931411, now seen corresponding path program 17 times [2018-01-31 10:38:01,440 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:01,440 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:01,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:01,441 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:01,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:01,450 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:02,244 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 10:38:02,244 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:02,244 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:38:02,249 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:38:02,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,267 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,274 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,284 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,294 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,304 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,312 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,314 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,318 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,345 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,419 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,494 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:02,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:03,051 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:03,403 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:03,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:03,982 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:03,987 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:04,378 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 10:38:04,396 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:04,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 56 [2018-01-31 10:38:04,397 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-31 10:38:04,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-31 10:38:04,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2018-01-31 10:38:04,397 INFO L87 Difference]: Start difference. First operand 267 states and 275 transitions. Second operand 56 states. [2018-01-31 10:38:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:05,748 INFO L93 Difference]: Finished difference Result 402 states and 418 transitions. [2018-01-31 10:38:05,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 10:38:05,748 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 246 [2018-01-31 10:38:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:05,749 INFO L225 Difference]: With dead ends: 402 [2018-01-31 10:38:05,749 INFO L226 Difference]: Without dead ends: 293 [2018-01-31 10:38:05,751 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2205, Invalid=9351, Unknown=0, NotChecked=0, Total=11556 [2018-01-31 10:38:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-01-31 10:38:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 283. [2018-01-31 10:38:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-31 10:38:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 291 transitions. [2018-01-31 10:38:05,754 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 291 transitions. Word has length 246 [2018-01-31 10:38:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:05,754 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 291 transitions. [2018-01-31 10:38:05,754 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-31 10:38:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 291 transitions. [2018-01-31 10:38:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-31 10:38:05,755 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:05,755 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 10:38:05,755 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 10:38:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1895137267, now seen corresponding path program 18 times [2018-01-31 10:38:05,755 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:05,755 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:05,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:05,756 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:05,756 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:05,765 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:06,430 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 10:38:06,430 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:06,430 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 10:38:06,435 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:38:06,445 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,447 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,449 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,454 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,459 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,487 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,508 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,627 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,774 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,863 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:06,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:07,019 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:07,732 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:08,141 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:08,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:08,591 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:09,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:09,708 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:09,715 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:10,276 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 10:38:10,294 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:10,295 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21] total 60 [2018-01-31 10:38:10,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-31 10:38:10,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-31 10:38:10,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2018-01-31 10:38:10,296 INFO L87 Difference]: Start difference. First operand 283 states and 291 transitions. Second operand 60 states. [2018-01-31 10:38:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:11,734 INFO L93 Difference]: Finished difference Result 426 states and 442 transitions. [2018-01-31 10:38:11,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 10:38:11,735 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 262 [2018-01-31 10:38:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:11,736 INFO L225 Difference]: With dead ends: 426 [2018-01-31 10:38:11,736 INFO L226 Difference]: Without dead ends: 309 [2018-01-31 10:38:11,737 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2495, Invalid=10845, Unknown=0, NotChecked=0, Total=13340 [2018-01-31 10:38:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-01-31 10:38:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-01-31 10:38:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-01-31 10:38:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 307 transitions. [2018-01-31 10:38:11,740 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 307 transitions. Word has length 262 [2018-01-31 10:38:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:11,740 INFO L432 AbstractCegarLoop]: Abstraction has 299 states and 307 transitions. [2018-01-31 10:38:11,740 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-31 10:38:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 307 transitions. [2018-01-31 10:38:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-01-31 10:38:11,741 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:11,741 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 10:38:11,741 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 10:38:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash 858809785, now seen corresponding path program 19 times [2018-01-31 10:38:11,742 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:11,742 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:11,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:11,742 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:11,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:11,752 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:12,444 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 10:38:12,445 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:12,445 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 10:38:12,449 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:38:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:12,478 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:12,553 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 10:38:12,570 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:12,570 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-31 10:38:12,570 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 10:38:12,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 10:38:12,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 10:38:12,571 INFO L87 Difference]: Start difference. First operand 299 states and 307 transitions. Second operand 45 states. [2018-01-31 10:38:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:13,268 INFO L93 Difference]: Finished difference Result 437 states and 452 transitions. [2018-01-31 10:38:13,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-31 10:38:13,269 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 278 [2018-01-31 10:38:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:13,270 INFO L225 Difference]: With dead ends: 437 [2018-01-31 10:38:13,270 INFO L226 Difference]: Without dead ends: 312 [2018-01-31 10:38:13,271 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 10:38:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-31 10:38:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2018-01-31 10:38:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-31 10:38:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 315 transitions. [2018-01-31 10:38:13,274 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 315 transitions. Word has length 278 [2018-01-31 10:38:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:13,274 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 315 transitions. [2018-01-31 10:38:13,274 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 10:38:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 315 transitions. [2018-01-31 10:38:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-31 10:38:13,275 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:13,275 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 10:38:13,275 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 10:38:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash 408379729, now seen corresponding path program 20 times [2018-01-31 10:38:13,275 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:13,275 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:13,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:13,276 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:38:13,276 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:13,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:14,084 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 10:38:14,084 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:14,084 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 10:38:14,089 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:38:14,100 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:14,115 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:14,118 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:14,121 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:14,662 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 10:38:14,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:14,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2018-01-31 10:38:14,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-31 10:38:14,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-31 10:38:14,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 10:38:14,680 INFO L87 Difference]: Start difference. First operand 307 states and 315 transitions. Second operand 47 states. [2018-01-31 10:38:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:15,459 INFO L93 Difference]: Finished difference Result 445 states and 460 transitions. [2018-01-31 10:38:15,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-31 10:38:15,459 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 286 [2018-01-31 10:38:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:15,460 INFO L225 Difference]: With dead ends: 445 [2018-01-31 10:38:15,460 INFO L226 Difference]: Without dead ends: 320 [2018-01-31 10:38:15,461 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 10:38:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-31 10:38:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2018-01-31 10:38:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-01-31 10:38:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 323 transitions. [2018-01-31 10:38:15,463 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 323 transitions. Word has length 286 [2018-01-31 10:38:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:15,464 INFO L432 AbstractCegarLoop]: Abstraction has 315 states and 323 transitions. [2018-01-31 10:38:15,464 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-31 10:38:15,464 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 323 transitions. [2018-01-31 10:38:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-01-31 10:38:15,465 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:15,465 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 10:38:15,465 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 10:38:15,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1728756503, now seen corresponding path program 21 times [2018-01-31 10:38:15,465 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:15,465 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:15,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:15,465 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:15,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:15,475 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:16,439 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 10:38:16,439 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:16,440 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 10:38:16,444 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:38:16,455 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,457 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,460 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,469 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,486 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,510 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,604 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,642 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:16,853 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:17,126 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:17,264 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:38:17,265 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:17,268 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 170 proven. 380 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-01-31 10:38:17,920 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:17,921 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 26] total 71 [2018-01-31 10:38:17,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-01-31 10:38:17,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-01-31 10:38:17,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 10:38:17,922 INFO L87 Difference]: Start difference. First operand 315 states and 323 transitions. Second operand 71 states. [2018-01-31 10:38:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:20,463 INFO L93 Difference]: Finished difference Result 466 states and 482 transitions. [2018-01-31 10:38:20,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-01-31 10:38:20,463 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 294 [2018-01-31 10:38:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:20,464 INFO L225 Difference]: With dead ends: 466 [2018-01-31 10:38:20,464 INFO L226 Difference]: Without dead ends: 341 [2018-01-31 10:38:20,466 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3896, Invalid=18156, Unknown=0, NotChecked=0, Total=22052 [2018-01-31 10:38:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-01-31 10:38:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 331. [2018-01-31 10:38:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 10:38:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 339 transitions. [2018-01-31 10:38:20,469 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 339 transitions. Word has length 294 [2018-01-31 10:38:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:20,469 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 339 transitions. [2018-01-31 10:38:20,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-01-31 10:38:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 339 transitions. [2018-01-31 10:38:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-31 10:38:20,470 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:20,471 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 10:38:20,471 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 10:38:20,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1710912687, now seen corresponding path program 22 times [2018-01-31 10:38:20,471 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:20,471 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:20,471 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:20,471 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:20,471 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:20,482 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:21,312 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 10:38:21,312 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:21,312 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 10:38:21,316 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:38:21,793 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:21,796 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:21,858 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 10:38:21,875 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:21,875 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2018-01-31 10:38:21,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-31 10:38:21,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-31 10:38:21,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-01-31 10:38:21,876 INFO L87 Difference]: Start difference. First operand 331 states and 339 transitions. Second operand 51 states. [2018-01-31 10:38:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:22,743 INFO L93 Difference]: Finished difference Result 477 states and 492 transitions. [2018-01-31 10:38:22,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-31 10:38:22,744 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 310 [2018-01-31 10:38:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:22,745 INFO L225 Difference]: With dead ends: 477 [2018-01-31 10:38:22,745 INFO L226 Difference]: Without dead ends: 344 [2018-01-31 10:38:22,746 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2018-01-31 10:38:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-31 10:38:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 339. [2018-01-31 10:38:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-31 10:38:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 347 transitions. [2018-01-31 10:38:22,749 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 347 transitions. Word has length 310 [2018-01-31 10:38:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:22,749 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 347 transitions. [2018-01-31 10:38:22,749 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-31 10:38:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 347 transitions. [2018-01-31 10:38:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-31 10:38:22,750 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:22,750 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 10:38:22,750 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 10:38:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1888292935, now seen corresponding path program 23 times [2018-01-31 10:38:22,750 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:22,751 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:22,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:22,751 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:22,751 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:22,763 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:23,707 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 10:38:23,708 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:23,708 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 10:38:23,715 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:38:23,730 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,741 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,751 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,761 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,784 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,787 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,792 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,814 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:23,944 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:24,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:24,474 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:24,810 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:25,487 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:26,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:27,270 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:29,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:30,955 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:38:30,961 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:38:30,970 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:38:31,090 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 10:38:31,117 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:38:31,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2018-01-31 10:38:31,117 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 10:38:31,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 10:38:31,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:38:31,118 INFO L87 Difference]: Start difference. First operand 339 states and 347 transitions. Second operand 53 states. [2018-01-31 10:38:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:38:32,354 INFO L93 Difference]: Finished difference Result 485 states and 500 transitions. [2018-01-31 10:38:32,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-31 10:38:32,355 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 318 [2018-01-31 10:38:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:38:32,355 INFO L225 Difference]: With dead ends: 485 [2018-01-31 10:38:32,356 INFO L226 Difference]: Without dead ends: 352 [2018-01-31 10:38:32,356 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 10:38:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-31 10:38:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2018-01-31 10:38:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-31 10:38:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 355 transitions. [2018-01-31 10:38:32,360 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 355 transitions. Word has length 318 [2018-01-31 10:38:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:38:32,360 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 355 transitions. [2018-01-31 10:38:32,360 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 10:38:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 355 transitions. [2018-01-31 10:38:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-01-31 10:38:32,362 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:38:32,362 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 10:38:32,362 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 10:38:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1089901535, now seen corresponding path program 24 times [2018-01-31 10:38:32,362 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:38:32,362 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:38:32,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:32,363 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:38:32,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:38:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:38:32,376 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:38:33,364 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 10:38:33,364 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:38:33,364 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 10:38:33,368 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:38:33,380 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,382 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,385 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,391 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,397 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,428 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,442 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,453 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,530 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,569 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,595 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:33,705 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:34,104 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:34,517 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:35,121 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:35,514 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:37,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:39,088 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:40,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:43,710 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-31 10:38:45,720 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:38:47,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown