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/rangesum60_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 10:15:38,672 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 10:15:38,673 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 10:15:38,682 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 10:15:38,682 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 10:15:38,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 10:15:38,683 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 10:15:38,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 10:15:38,685 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 10:15:38,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 10:15:38,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 10:15:38,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 10:15:38,686 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 10:15:38,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 10:15:38,688 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 10:15:38,689 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 10:15:38,690 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 10:15:38,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 10:15:38,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 10:15:38,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 10:15:38,693 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 10:15:38,693 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 10:15:38,693 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 10:15:38,694 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 10:15:38,694 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 10:15:38,695 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 10:15:38,695 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 10:15:38,696 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 10:15:38,696 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 10:15:38,696 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 10:15:38,696 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 10:15:38,697 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 10:15:38,701 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 10:15:38,702 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 10:15:38,702 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 10:15:38,702 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 10:15:38,702 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 10:15:38,702 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 10:15:38,702 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 10:15:38,703 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 10:15:38,703 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 10:15:38,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 10:15:38,704 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 10:15:38,704 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 10:15:38,705 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 10:15:38,705 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 10:15:38,705 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 10:15:38,705 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 10:15:38,705 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 10:15:38,705 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 10:15:38,705 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 10:15:38,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 10:15:38,729 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 10:15:38,731 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 10:15:38,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 10:15:38,732 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 10:15:38,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60_false-unreach-call.i [2018-01-31 10:15:38,799 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 10:15:38,800 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 10:15:38,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 10:15:38,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 10:15:38,804 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 10:15:38,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4013eb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38, skipping insertion in model container [2018-01-31 10:15:38,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,816 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:15:38,825 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:15:38,896 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:15:38,908 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:15:38,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38 WrapperNode [2018-01-31 10:15:38,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 10:15:38,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 10:15:38,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 10:15:38,913 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 10:15:38,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (1/1) ... [2018-01-31 10:15:38,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 10:15:38,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 10:15:38,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 10:15:38,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 10:15:38,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (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 10:15:38,969 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 10:15:38,969 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 10:15:38,969 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-31 10:15:38,969 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-31 10:15:38,969 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 10:15:38,969 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 10:15:38,969 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 10:15:38,969 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 10:15:38,969 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 10:15:38,970 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 10:15:39,327 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 10:15:39,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:15:39 BoogieIcfgContainer [2018-01-31 10:15:39,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 10:15:39,328 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 10:15:39,328 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 10:15:39,329 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 10:15:39,331 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:15:39" (1/1) ... [2018-01-31 10:15:39,336 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 10:15:39,336 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 10:15:39,336 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 10:15:39,362 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 10:15:39,380 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 10:15:39,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 10:15:46,292 INFO L314 AbstractInterpreter]: Visited 104 different actions 756 times. Merged at 73 different actions 393 times. Never widened. Found 75 fixpoints after 15 different actions. Largest state had 65 variables. [2018-01-31 10:15:46,293 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 10:15:46,301 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 10 [2018-01-31 10:15:46,301 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 10:15:46,301 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 10:15:46,301 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_19| v_init_nondet_~x.base_2), at (SUMMARY for call write~int(#t~nondet1, ~x.base, ~x.offset + ~i~3 * 4, 4); srcloc: L7')) ((select (select |v_#memory_int_11| |v_main_~#x~8.base_11|) |v_main_~#x~8.offset_11|), at (SUMMARY for call #t~mem11 := read~int(~#x~8.base, ~#x~8.offset + 0, 4); srcloc: L42)) ((select (select |v_#memory_int_12| |v_main_~#x~8.base_12|) (+ |v_main_~#x~8.offset_12| (* 4 v_main_~i~9_4) 4)), at (SUMMARY for call #t~mem14 := read~int(~#x~8.base, ~#x~8.offset + (~i~9 + 1) * 4, 4); srcloc: L44)) ((select |v_#memory_int_10| |v_main_~#x~8.base_9|), at (SUMMARY for call write~int(~temp~8, ~#x~8.base, ~#x~8.offset + 4, 4); srcloc: L40'''''')) ((select (select |v_#memory_int_5| |v_main_~#x~8.base_6|) |v_main_~#x~8.offset_6|), at (SUMMARY for call #t~mem6 := read~int(~#x~8.base, ~#x~8.offset + 0, 4); srcloc: L40)) ((select |v_#memory_int_8| |v_main_~#x~8.base_8|), at (SUMMARY for call write~int(#t~mem8, ~#x~8.base, ~#x~8.offset + 0, 4); srcloc: L40'''')) ((select (select |v_#memory_int_17| v_rangesum_~x.base_2) (+ v_rangesum_~x.offset_2 (* 4 v_rangesum_~i~5_6))), at (SUMMARY for call #t~mem4 := read~int(~x.base, ~x.offset + ~i~5 * 4, 4); srcloc: L19)) ((select |v_#memory_int_16| |v_main_~#x~8.base_14|), at (SUMMARY for call write~int(~temp~8, ~#x~8.base, ~#x~8.offset + 236, 4); srcloc: L43''''''')) ((select |v_#memory_int_14| |v_main_~#x~8.base_13|), at (SUMMARY for call write~int(#t~mem14, ~#x~8.base, ~#x~8.offset + ~i~9 * 4, 4); srcloc: L44')) ((select (select |v_#memory_int_6| |v_main_~#x~8.base_7|) (+ |v_main_~#x~8.offset_7| 4)), at (SUMMARY for call #t~mem8 := read~int(~#x~8.base, ~#x~8.offset + 4, 4); srcloc: L40''')) [2018-01-31 10:15:46,315 INFO L547 PartitionManager]: partitioning result: [2018-01-31 10:15:46,315 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 10:15:46,315 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 10:15:46,315 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 6 [2018-01-31 10:15:46,315 INFO L564 PartitionManager]: # location blocks :3 [2018-01-31 10:15:46,315 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 10:15:46,315 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 6 [2018-01-31 10:15:46,316 INFO L564 PartitionManager]: # location blocks :2 [2018-01-31 10:15:46,316 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 10:15:46,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:15:46 BasicIcfg [2018-01-31 10:15:46,337 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 10:15:46,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 10:15:46,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 10:15:46,349 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 10:15:46,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:15:38" (1/4) ... [2018-01-31 10:15:46,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393252cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:15:46, skipping insertion in model container [2018-01-31 10:15:46,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:15:38" (2/4) ... [2018-01-31 10:15:46,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393252cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:15:46, skipping insertion in model container [2018-01-31 10:15:46,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:15:39" (3/4) ... [2018-01-31 10:15:46,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393252cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:15:46, skipping insertion in model container [2018-01-31 10:15:46,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:15:46" (4/4) ... [2018-01-31 10:15:46,351 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 10:15:46,356 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 10:15:46,363 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 10:15:46,450 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 10:15:46,450 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 10:15:46,450 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 10:15:46,450 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 10:15:46,450 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 10:15:46,450 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 10:15:46,450 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 10:15:46,450 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 10:15:46,451 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 10:15:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-31 10:15:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-31 10:15:46,462 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:46,462 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] [2018-01-31 10:15:46,462 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 10:15:46,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1073882414, now seen corresponding path program 1 times [2018-01-31 10:15:46,466 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:46,466 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:46,494 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:46,494 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:46,494 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:46,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:46,546 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 10:15:46,547 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:15:46,548 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 10:15:46,549 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 10:15:46,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 10:15:46,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:15:46,555 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-31 10:15:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:46,571 INFO L93 Difference]: Finished difference Result 157 states and 187 transitions. [2018-01-31 10:15:46,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 10:15:46,571 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-01-31 10:15:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:46,577 INFO L225 Difference]: With dead ends: 157 [2018-01-31 10:15:46,577 INFO L226 Difference]: Without dead ends: 81 [2018-01-31 10:15:46,579 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 10:15:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-31 10:15:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-31 10:15:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-31 10:15:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2018-01-31 10:15:46,602 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 35 [2018-01-31 10:15:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:46,603 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2018-01-31 10:15:46,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 10:15:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2018-01-31 10:15:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 10:15:46,604 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:46,604 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 10:15:46,604 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 10:15:46,605 INFO L82 PathProgramCache]: Analyzing trace with hash -173460809, now seen corresponding path program 1 times [2018-01-31 10:15:46,605 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:46,605 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:46,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:46,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:46,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:46,620 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:46,787 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 10:15:46,787 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:15:46,787 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 10:15:46,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 10:15:46,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 10:15:46,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-31 10:15:46,789 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 4 states. [2018-01-31 10:15:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:46,934 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2018-01-31 10:15:46,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 10:15:46,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-01-31 10:15:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:46,936 INFO L225 Difference]: With dead ends: 117 [2018-01-31 10:15:46,936 INFO L226 Difference]: Without dead ends: 88 [2018-01-31 10:15:46,937 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-31 10:15:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-31 10:15:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-31 10:15:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 10:15:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2018-01-31 10:15:46,943 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 36 [2018-01-31 10:15:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:46,943 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2018-01-31 10:15:46,943 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 10:15:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2018-01-31 10:15:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-31 10:15:46,944 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:46,944 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] [2018-01-31 10:15:46,945 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 10:15:46,945 INFO L82 PathProgramCache]: Analyzing trace with hash 858737893, now seen corresponding path program 1 times [2018-01-31 10:15:46,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:46,945 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:46,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:46,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:46,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:46,970 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:47,093 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 10:15:47,093 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:47,093 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:15:47,101 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:47,154 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:47,229 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 10:15:47,252 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:47,252 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2018-01-31 10:15:47,253 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 10:15:47,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 10:15:47,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 10:15:47,253 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 9 states. [2018-01-31 10:15:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:47,485 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2018-01-31 10:15:47,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 10:15:47,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-01-31 10:15:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:47,486 INFO L225 Difference]: With dead ends: 125 [2018-01-31 10:15:47,486 INFO L226 Difference]: Without dead ends: 96 [2018-01-31 10:15:47,486 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-01-31 10:15:47,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-31 10:15:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2018-01-31 10:15:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-01-31 10:15:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2018-01-31 10:15:47,490 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 44 [2018-01-31 10:15:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:47,491 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2018-01-31 10:15:47,491 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 10:15:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2018-01-31 10:15:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-31 10:15:47,491 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:47,492 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:47,492 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 10:15:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash 575101203, now seen corresponding path program 2 times [2018-01-31 10:15:47,492 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:47,492 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:47,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:47,492 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:47,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:47,502 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:47,686 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:47,686 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 10:15:47,704 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:15:47,714 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:47,726 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:47,740 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:47,742 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:47,930 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:47,930 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-01-31 10:15:47,931 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 10:15:47,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 10:15:47,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-01-31 10:15:47,931 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 13 states. [2018-01-31 10:15:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:48,169 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2018-01-31 10:15:48,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 10:15:48,169 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-01-31 10:15:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:48,170 INFO L225 Difference]: With dead ends: 133 [2018-01-31 10:15:48,170 INFO L226 Difference]: Without dead ends: 104 [2018-01-31 10:15:48,170 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-01-31 10:15:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-31 10:15:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2018-01-31 10:15:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-31 10:15:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2018-01-31 10:15:48,174 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 52 [2018-01-31 10:15:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:48,174 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2018-01-31 10:15:48,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 10:15:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2018-01-31 10:15:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-31 10:15:48,175 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:48,175 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:48,175 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 10:15:48,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1390368577, now seen corresponding path program 3 times [2018-01-31 10:15:48,176 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:48,176 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:48,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:48,176 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:48,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:48,189 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:48,371 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:48,371 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 10:15:48,379 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:15:48,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:48,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:48,397 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:48,400 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:48,406 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:48,408 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:48,521 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:48,521 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2018-01-31 10:15:48,522 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 10:15:48,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 10:15:48,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-01-31 10:15:48,522 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 17 states. [2018-01-31 10:15:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:48,680 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2018-01-31 10:15:48,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 10:15:48,680 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2018-01-31 10:15:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:48,680 INFO L225 Difference]: With dead ends: 141 [2018-01-31 10:15:48,680 INFO L226 Difference]: Without dead ends: 112 [2018-01-31 10:15:48,681 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-01-31 10:15:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-01-31 10:15:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2018-01-31 10:15:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-31 10:15:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2018-01-31 10:15:48,687 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 60 [2018-01-31 10:15:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:48,687 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2018-01-31 10:15:48,687 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 10:15:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2018-01-31 10:15:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-01-31 10:15:48,688 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:48,688 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:48,688 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 10:15:48,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2031794321, now seen corresponding path program 4 times [2018-01-31 10:15:48,689 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:48,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:48,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:48,689 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:48,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:48,701 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:48,897 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:48,897 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 10:15:48,904 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:15:48,922 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:48,924 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:49,008 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:49,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2018-01-31 10:15:49,009 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 10:15:49,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 10:15:49,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2018-01-31 10:15:49,009 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 21 states. [2018-01-31 10:15:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:49,247 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2018-01-31 10:15:49,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-31 10:15:49,247 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-01-31 10:15:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:49,248 INFO L225 Difference]: With dead ends: 149 [2018-01-31 10:15:49,248 INFO L226 Difference]: Without dead ends: 120 [2018-01-31 10:15:49,248 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:15:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-31 10:15:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 115. [2018-01-31 10:15:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-31 10:15:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2018-01-31 10:15:49,253 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 68 [2018-01-31 10:15:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:49,253 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2018-01-31 10:15:49,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 10:15:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2018-01-31 10:15:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-01-31 10:15:49,254 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:49,254 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:49,254 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 10:15:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1303959139, now seen corresponding path program 5 times [2018-01-31 10:15:49,255 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:49,255 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:49,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:49,255 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:49,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:49,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:49,579 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:49,579 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 10:15:49,583 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:15:49,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:49,599 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:49,611 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:49,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:49,628 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:49,640 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:49,654 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:49,655 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:49,808 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:49,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-01-31 10:15:49,809 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 10:15:49,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 10:15:49,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2018-01-31 10:15:49,810 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 25 states. [2018-01-31 10:15:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:50,088 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2018-01-31 10:15:50,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 10:15:50,088 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 76 [2018-01-31 10:15:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:50,089 INFO L225 Difference]: With dead ends: 157 [2018-01-31 10:15:50,089 INFO L226 Difference]: Without dead ends: 128 [2018-01-31 10:15:50,090 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=841, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 10:15:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-01-31 10:15:50,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2018-01-31 10:15:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-31 10:15:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2018-01-31 10:15:50,094 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 76 [2018-01-31 10:15:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:50,094 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2018-01-31 10:15:50,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 10:15:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2018-01-31 10:15:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-31 10:15:50,096 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:50,096 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:50,096 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 10:15:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash -84738613, now seen corresponding path program 6 times [2018-01-31 10:15:50,096 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:50,096 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:50,096 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:50,097 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:50,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:50,104 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:50,289 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:50,290 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 10:15:50,298 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:15:50,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,318 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,320 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,323 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,326 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,336 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,340 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:50,340 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:50,342 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:50,461 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:50,461 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2018-01-31 10:15:50,461 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:15:50,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:15:50,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:15:50,462 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 29 states. [2018-01-31 10:15:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:50,717 INFO L93 Difference]: Finished difference Result 165 states and 180 transitions. [2018-01-31 10:15:50,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-31 10:15:50,717 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 84 [2018-01-31 10:15:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:50,718 INFO L225 Difference]: With dead ends: 165 [2018-01-31 10:15:50,718 INFO L226 Difference]: Without dead ends: 136 [2018-01-31 10:15:50,718 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=471, Invalid=1169, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:15:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-01-31 10:15:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2018-01-31 10:15:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-31 10:15:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2018-01-31 10:15:50,726 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 84 [2018-01-31 10:15:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:50,727 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2018-01-31 10:15:50,727 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:15:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2018-01-31 10:15:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-31 10:15:50,727 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:50,727 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:50,728 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 10:15:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1193884679, now seen corresponding path program 7 times [2018-01-31 10:15:50,728 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:50,728 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:50,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:50,728 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:50,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:50,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:50,929 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:50,929 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 10:15:50,934 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:50,967 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:51,108 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:51,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2018-01-31 10:15:51,108 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:15:51,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:15:51,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:15:51,109 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand 33 states. [2018-01-31 10:15:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:51,451 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2018-01-31 10:15:51,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 10:15:51,452 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 92 [2018-01-31 10:15:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:51,453 INFO L225 Difference]: With dead ends: 173 [2018-01-31 10:15:51,453 INFO L226 Difference]: Without dead ends: 144 [2018-01-31 10:15:51,453 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=611, Invalid=1551, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 10:15:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-31 10:15:51,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2018-01-31 10:15:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-31 10:15:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2018-01-31 10:15:51,456 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 92 [2018-01-31 10:15:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:51,457 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2018-01-31 10:15:51,457 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:15:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2018-01-31 10:15:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-01-31 10:15:51,457 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:51,457 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:51,458 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 10:15:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1977646119, now seen corresponding path program 8 times [2018-01-31 10:15:51,458 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:51,458 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:51,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:51,458 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:51,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:51,467 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:51,675 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:51,675 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) [2018-01-31 10:15:51,680 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:15:51,691 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:51,699 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:51,701 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:51,702 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:51,883 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:51,883 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2018-01-31 10:15:51,883 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 10:15:51,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 10:15:51,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 10:15:51,884 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 37 states. [2018-01-31 10:15:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:52,294 INFO L93 Difference]: Finished difference Result 181 states and 196 transitions. [2018-01-31 10:15:52,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 10:15:52,294 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 100 [2018-01-31 10:15:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:52,295 INFO L225 Difference]: With dead ends: 181 [2018-01-31 10:15:52,295 INFO L226 Difference]: Without dead ends: 152 [2018-01-31 10:15:52,296 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=769, Invalid=1987, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:15:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-31 10:15:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2018-01-31 10:15:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-31 10:15:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2018-01-31 10:15:52,305 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 100 [2018-01-31 10:15:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:52,305 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2018-01-31 10:15:52,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 10:15:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2018-01-31 10:15:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-01-31 10:15:52,306 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:52,306 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:52,306 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 10:15:52,306 INFO L82 PathProgramCache]: Analyzing trace with hash -302111147, now seen corresponding path program 9 times [2018-01-31 10:15:52,306 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:52,306 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:52,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:52,315 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:52,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:52,329 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:53,459 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:53,459 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 10:15:53,464 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:15:53,485 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,488 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,490 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,493 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,508 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,516 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,529 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,541 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,571 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:53,571 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:53,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:53,783 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:53,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2018-01-31 10:15:53,783 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-31 10:15:53,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-31 10:15:53,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1280, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:15:53,784 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 41 states. [2018-01-31 10:15:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:54,231 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2018-01-31 10:15:54,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-31 10:15:54,232 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 108 [2018-01-31 10:15:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:54,233 INFO L225 Difference]: With dead ends: 189 [2018-01-31 10:15:54,233 INFO L226 Difference]: Without dead ends: 160 [2018-01-31 10:15:54,234 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=945, Invalid=2477, Unknown=0, NotChecked=0, Total=3422 [2018-01-31 10:15:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-31 10:15:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2018-01-31 10:15:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-31 10:15:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2018-01-31 10:15:54,236 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 108 [2018-01-31 10:15:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:54,236 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2018-01-31 10:15:54,236 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-31 10:15:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2018-01-31 10:15:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-01-31 10:15:54,245 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:54,245 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:54,245 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 10:15:54,245 INFO L82 PathProgramCache]: Analyzing trace with hash 253608579, now seen corresponding path program 10 times [2018-01-31 10:15:54,246 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:54,246 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:54,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:54,246 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:54,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:54,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:54,633 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:54,633 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 10:15:54,638 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:15:54,668 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:54,670 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:55,131 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:55,131 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2018-01-31 10:15:55,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 10:15:55,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 10:15:55,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 10:15:55,132 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 45 states. [2018-01-31 10:15:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:55,883 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2018-01-31 10:15:55,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 10:15:55,883 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 116 [2018-01-31 10:15:55,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:55,884 INFO L225 Difference]: With dead ends: 197 [2018-01-31 10:15:55,884 INFO L226 Difference]: Without dead ends: 168 [2018-01-31 10:15:55,885 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1139, Invalid=3021, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 10:15:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-01-31 10:15:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2018-01-31 10:15:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-31 10:15:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2018-01-31 10:15:55,887 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 116 [2018-01-31 10:15:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:55,888 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2018-01-31 10:15:55,888 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 10:15:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2018-01-31 10:15:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-01-31 10:15:55,888 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:55,888 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 10:15:55,889 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 10:15:55,889 INFO L82 PathProgramCache]: Analyzing trace with hash -114470735, now seen corresponding path program 11 times [2018-01-31 10:15:55,889 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:55,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:55,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:55,889 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:55,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:55,897 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:56,302 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:56,302 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 10:15:56,307 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:15:56,314 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,316 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,317 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,319 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,321 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,324 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,331 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,346 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,354 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:56,377 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:56,379 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:56,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:56,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2018-01-31 10:15:56,657 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 10:15:56,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 10:15:56,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=1848, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 10:15:56,658 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand 49 states. [2018-01-31 10:15:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:57,219 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2018-01-31 10:15:57,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-31 10:15:57,220 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 124 [2018-01-31 10:15:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:57,220 INFO L225 Difference]: With dead ends: 205 [2018-01-31 10:15:57,220 INFO L226 Difference]: Without dead ends: 176 [2018-01-31 10:15:57,221 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1351, Invalid=3619, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 10:15:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-31 10:15:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2018-01-31 10:15:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-31 10:15:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2018-01-31 10:15:57,225 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 124 [2018-01-31 10:15:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:57,225 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2018-01-31 10:15:57,225 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 10:15:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2018-01-31 10:15:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-01-31 10:15:57,226 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:57,226 INFO L351 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:15:57,226 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 10:15:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash -31797025, now seen corresponding path program 12 times [2018-01-31 10:15:57,226 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:57,226 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:57,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:57,226 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:57,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:57,245 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:57,697 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:57,697 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 10:15:57,701 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:15:57,717 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,725 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,733 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,747 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,766 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,796 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,872 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,914 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,936 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,954 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:57,955 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:57,958 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:58,313 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:58,313 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 53 [2018-01-31 10:15:58,313 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 10:15:58,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 10:15:58,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=2171, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:15:58,314 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand 53 states. [2018-01-31 10:15:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:58,888 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2018-01-31 10:15:58,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 10:15:58,888 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 132 [2018-01-31 10:15:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:58,888 INFO L225 Difference]: With dead ends: 213 [2018-01-31 10:15:58,889 INFO L226 Difference]: Without dead ends: 184 [2018-01-31 10:15:58,890 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1581, Invalid=4271, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 10:15:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-31 10:15:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2018-01-31 10:15:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 10:15:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2018-01-31 10:15:58,894 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 132 [2018-01-31 10:15:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:58,894 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2018-01-31 10:15:58,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 10:15:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2018-01-31 10:15:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-01-31 10:15:58,895 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:58,895 INFO L351 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:15:58,895 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 10:15:58,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1579924723, now seen corresponding path program 13 times [2018-01-31 10:15:58,895 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:58,895 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:58,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:58,896 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:58,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:58,904 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:59,325 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:59,325 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 10:15:59,329 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:59,355 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:59,678 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:59,678 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 57 [2018-01-31 10:15:59,678 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 10:15:59,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 10:15:59,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=2520, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:15:59,679 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 57 states. [2018-01-31 10:16:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:00,452 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-31 10:16:00,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-31 10:16:00,452 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 140 [2018-01-31 10:16:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:00,453 INFO L225 Difference]: With dead ends: 221 [2018-01-31 10:16:00,453 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 10:16:00,454 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1829, Invalid=4977, Unknown=0, NotChecked=0, Total=6806 [2018-01-31 10:16:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 10:16:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 10:16:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 10:16:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2018-01-31 10:16:00,464 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 140 [2018-01-31 10:16:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:00,465 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2018-01-31 10:16:00,465 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 10:16:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2018-01-31 10:16:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-31 10:16:00,465 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:00,465 INFO L351 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:16:00,466 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 10:16:00,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1706580165, now seen corresponding path program 14 times [2018-01-31 10:16:00,466 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:00,466 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:00,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:00,466 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:16:00,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:00,492 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:01,066 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:01,066 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 10:16:01,071 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:16:01,081 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:01,093 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:01,095 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:01,097 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:01,473 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:01,474 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 61 [2018-01-31 10:16:01,474 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 10:16:01,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 10:16:01,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=2895, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 10:16:01,475 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand 61 states. [2018-01-31 10:16:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:02,353 INFO L93 Difference]: Finished difference Result 229 states and 244 transitions. [2018-01-31 10:16:02,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-31 10:16:02,353 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 148 [2018-01-31 10:16:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:02,354 INFO L225 Difference]: With dead ends: 229 [2018-01-31 10:16:02,354 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 10:16:02,355 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2095, Invalid=5737, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 10:16:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 10:16:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-31 10:16:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-31 10:16:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 206 transitions. [2018-01-31 10:16:02,358 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 206 transitions. Word has length 148 [2018-01-31 10:16:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:02,359 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 206 transitions. [2018-01-31 10:16:02,359 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 10:16:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 206 transitions. [2018-01-31 10:16:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-01-31 10:16:02,359 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:02,359 INFO L351 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 10:16:02,359 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 10:16:02,360 INFO L82 PathProgramCache]: Analyzing trace with hash -815596183, now seen corresponding path program 15 times [2018-01-31 10:16:02,360 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:02,360 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:02,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:02,362 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:02,362 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:02,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:03,151 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:03,152 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:16:03,156 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:16:03,167 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,169 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,172 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,174 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,183 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,187 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,196 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,204 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,217 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,225 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,265 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,305 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,324 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,332 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,381 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,425 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:03,426 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:03,428 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:03,861 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:03,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 65 [2018-01-31 10:16:03,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-01-31 10:16:03,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-01-31 10:16:03,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=3296, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 10:16:03,863 INFO L87 Difference]: Start difference. First operand 195 states and 206 transitions. Second operand 65 states. [2018-01-31 10:16:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:04,819 INFO L93 Difference]: Finished difference Result 237 states and 252 transitions. [2018-01-31 10:16:04,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-31 10:16:04,819 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 156 [2018-01-31 10:16:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:04,820 INFO L225 Difference]: With dead ends: 237 [2018-01-31 10:16:04,820 INFO L226 Difference]: Without dead ends: 208 [2018-01-31 10:16:04,821 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2491 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2379, Invalid=6551, Unknown=0, NotChecked=0, Total=8930 [2018-01-31 10:16:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-31 10:16:04,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2018-01-31 10:16:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-31 10:16:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 214 transitions. [2018-01-31 10:16:04,824 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 214 transitions. Word has length 156 [2018-01-31 10:16:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:04,824 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 214 transitions. [2018-01-31 10:16:04,824 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-01-31 10:16:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 214 transitions. [2018-01-31 10:16:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-31 10:16:04,825 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:04,825 INFO L351 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:04,825 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 10:16:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1528055191, now seen corresponding path program 16 times [2018-01-31 10:16:04,825 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:04,825 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:04,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:04,826 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:04,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:04,835 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:05,673 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:05,673 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 10:16:05,678 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:16:05,741 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:05,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:06,183 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:06,183 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 69 [2018-01-31 10:16:06,183 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 10:16:06,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 10:16:06,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=969, Invalid=3723, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 10:16:06,184 INFO L87 Difference]: Start difference. First operand 203 states and 214 transitions. Second operand 69 states. [2018-01-31 10:16:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:07,162 INFO L93 Difference]: Finished difference Result 245 states and 260 transitions. [2018-01-31 10:16:07,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 10:16:07,163 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 164 [2018-01-31 10:16:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:07,164 INFO L225 Difference]: With dead ends: 245 [2018-01-31 10:16:07,164 INFO L226 Difference]: Without dead ends: 216 [2018-01-31 10:16:07,165 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2833 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2681, Invalid=7419, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 10:16:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-31 10:16:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2018-01-31 10:16:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-31 10:16:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 222 transitions. [2018-01-31 10:16:07,168 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 222 transitions. Word has length 164 [2018-01-31 10:16:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:07,168 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 222 transitions. [2018-01-31 10:16:07,168 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 10:16:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 222 transitions. [2018-01-31 10:16:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-01-31 10:16:07,169 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:07,169 INFO L351 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:07,169 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 10:16:07,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1991671867, now seen corresponding path program 17 times [2018-01-31 10:16:07,169 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:07,169 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:07,169 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:07,169 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:07,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:07,178 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:08,352 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:08,352 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 10:16:08,357 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:16:08,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,368 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,369 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,372 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,374 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,385 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,403 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,410 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,419 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,441 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,452 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,471 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:08,549 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:08,552 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:09,061 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:09,061 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 73 [2018-01-31 10:16:09,062 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 10:16:09,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 10:16:09,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1080, Invalid=4176, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 10:16:09,062 INFO L87 Difference]: Start difference. First operand 211 states and 222 transitions. Second operand 73 states. [2018-01-31 10:16:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:10,717 INFO L93 Difference]: Finished difference Result 253 states and 268 transitions. [2018-01-31 10:16:10,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-31 10:16:10,717 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 172 [2018-01-31 10:16:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:10,718 INFO L225 Difference]: With dead ends: 253 [2018-01-31 10:16:10,718 INFO L226 Difference]: Without dead ends: 224 [2018-01-31 10:16:10,719 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3001, Invalid=8341, Unknown=0, NotChecked=0, Total=11342 [2018-01-31 10:16:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-31 10:16:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2018-01-31 10:16:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 10:16:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 230 transitions. [2018-01-31 10:16:10,722 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 230 transitions. Word has length 172 [2018-01-31 10:16:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:10,722 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 230 transitions. [2018-01-31 10:16:10,722 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 10:16:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 230 transitions. [2018-01-31 10:16:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-01-31 10:16:10,722 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:10,723 INFO L351 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:10,723 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 10:16:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash -672093197, now seen corresponding path program 18 times [2018-01-31 10:16:10,723 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:10,723 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:10,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:10,723 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:10,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:10,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:11,461 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:11,461 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 10:16:11,465 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:16:11,477 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,479 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,481 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,484 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,490 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,497 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,526 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,532 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,560 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,603 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,636 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:11,806 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,006 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,094 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,236 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,319 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,613 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,935 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:12,936 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:12,940 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:13,479 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:13,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 77 [2018-01-31 10:16:13,479 INFO L409 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-01-31 10:16:13,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-01-31 10:16:13,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1197, Invalid=4655, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 10:16:13,481 INFO L87 Difference]: Start difference. First operand 219 states and 230 transitions. Second operand 77 states. [2018-01-31 10:16:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:14,639 INFO L93 Difference]: Finished difference Result 261 states and 276 transitions. [2018-01-31 10:16:14,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-01-31 10:16:14,639 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 180 [2018-01-31 10:16:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:14,640 INFO L225 Difference]: With dead ends: 261 [2018-01-31 10:16:14,640 INFO L226 Difference]: Without dead ends: 232 [2018-01-31 10:16:14,641 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3583 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3339, Invalid=9317, Unknown=0, NotChecked=0, Total=12656 [2018-01-31 10:16:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-31 10:16:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2018-01-31 10:16:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-31 10:16:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 238 transitions. [2018-01-31 10:16:14,644 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 238 transitions. Word has length 180 [2018-01-31 10:16:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:14,644 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 238 transitions. [2018-01-31 10:16:14,644 INFO L433 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-01-31 10:16:14,644 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 238 transitions. [2018-01-31 10:16:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-01-31 10:16:14,644 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:14,645 INFO L351 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:14,645 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 10:16:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash -151533023, now seen corresponding path program 19 times [2018-01-31 10:16:14,645 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:14,645 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:14,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:14,645 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:14,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:14,654 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:15,555 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:15,555 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 10:16:15,562 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:16:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:15,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:16,194 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:16,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 81 [2018-01-31 10:16:16,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-31 10:16:16,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-31 10:16:16,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1320, Invalid=5160, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 10:16:16,195 INFO L87 Difference]: Start difference. First operand 227 states and 238 transitions. Second operand 81 states. [2018-01-31 10:16:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:17,376 INFO L93 Difference]: Finished difference Result 269 states and 284 transitions. [2018-01-31 10:16:17,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-31 10:16:17,376 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 188 [2018-01-31 10:16:17,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:17,377 INFO L225 Difference]: With dead ends: 269 [2018-01-31 10:16:17,377 INFO L226 Difference]: Without dead ends: 240 [2018-01-31 10:16:17,378 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3695, Invalid=10347, Unknown=0, NotChecked=0, Total=14042 [2018-01-31 10:16:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-31 10:16:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2018-01-31 10:16:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 10:16:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 246 transitions. [2018-01-31 10:16:17,381 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 246 transitions. Word has length 188 [2018-01-31 10:16:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:17,381 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 246 transitions. [2018-01-31 10:16:17,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-31 10:16:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 246 transitions. [2018-01-31 10:16:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-01-31 10:16:17,382 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:17,382 INFO L351 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:17,382 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 10:16:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash -934487473, now seen corresponding path program 20 times [2018-01-31 10:16:17,382 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:17,382 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:17,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:17,383 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:16:17,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:17,391 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:18,300 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:18,301 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 10:16:18,305 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:16:18,317 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:18,332 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:18,334 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:18,337 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:19,826 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:19,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 85 [2018-01-31 10:16:19,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-01-31 10:16:19,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-01-31 10:16:19,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1449, Invalid=5691, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 10:16:19,827 INFO L87 Difference]: Start difference. First operand 235 states and 246 transitions. Second operand 85 states. [2018-01-31 10:16:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:21,136 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2018-01-31 10:16:21,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-01-31 10:16:21,138 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 196 [2018-01-31 10:16:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:21,138 INFO L225 Difference]: With dead ends: 277 [2018-01-31 10:16:21,139 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 10:16:21,140 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4421 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4069, Invalid=11431, Unknown=0, NotChecked=0, Total=15500 [2018-01-31 10:16:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 10:16:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 10:16:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 10:16:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 254 transitions. [2018-01-31 10:16:21,142 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 254 transitions. Word has length 196 [2018-01-31 10:16:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:21,143 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 254 transitions. [2018-01-31 10:16:21,143 INFO L433 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-01-31 10:16:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 254 transitions. [2018-01-31 10:16:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-01-31 10:16:21,143 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:21,144 INFO L351 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:21,144 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 10:16:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1608375421, now seen corresponding path program 21 times [2018-01-31 10:16:21,144 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:21,144 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:21,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:21,144 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:21,144 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:21,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:22,308 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:22,308 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 10:16:22,312 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:16:22,324 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,327 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,329 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,334 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,355 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,375 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,394 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,414 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,460 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,480 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,537 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,675 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,699 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,746 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:22,914 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:23,031 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:23,110 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:23,277 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:23,703 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:23,705 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:23,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:24,461 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:24,461 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 89 [2018-01-31 10:16:24,462 INFO L409 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-01-31 10:16:24,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-01-31 10:16:24,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1584, Invalid=6248, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 10:16:24,462 INFO L87 Difference]: Start difference. First operand 243 states and 254 transitions. Second operand 89 states. [2018-01-31 10:16:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:26,208 INFO L93 Difference]: Finished difference Result 285 states and 300 transitions. [2018-01-31 10:16:26,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 10:16:26,208 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 204 [2018-01-31 10:16:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:26,209 INFO L225 Difference]: With dead ends: 285 [2018-01-31 10:16:26,209 INFO L226 Difference]: Without dead ends: 256 [2018-01-31 10:16:26,210 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4873 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4461, Invalid=12569, Unknown=0, NotChecked=0, Total=17030 [2018-01-31 10:16:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-01-31 10:16:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2018-01-31 10:16:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-01-31 10:16:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 262 transitions. [2018-01-31 10:16:26,213 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 262 transitions. Word has length 204 [2018-01-31 10:16:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:26,213 INFO L432 AbstractCegarLoop]: Abstraction has 251 states and 262 transitions. [2018-01-31 10:16:26,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-01-31 10:16:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 262 transitions. [2018-01-31 10:16:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-01-31 10:16:26,214 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:26,214 INFO L351 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:26,214 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 10:16:26,214 INFO L82 PathProgramCache]: Analyzing trace with hash 60346539, now seen corresponding path program 22 times [2018-01-31 10:16:26,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:26,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:26,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:26,215 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:26,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:26,224 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:27,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:27,558 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 10:16:27,562 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:16:27,742 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:27,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:28,603 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:28,603 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 93 [2018-01-31 10:16:28,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-01-31 10:16:28,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-01-31 10:16:28,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1725, Invalid=6831, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 10:16:28,605 INFO L87 Difference]: Start difference. First operand 251 states and 262 transitions. Second operand 93 states. [2018-01-31 10:16:30,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:30,645 INFO L93 Difference]: Finished difference Result 293 states and 308 transitions. [2018-01-31 10:16:30,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-01-31 10:16:30,646 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 212 [2018-01-31 10:16:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:30,647 INFO L225 Difference]: With dead ends: 293 [2018-01-31 10:16:30,647 INFO L226 Difference]: Without dead ends: 264 [2018-01-31 10:16:30,648 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5347 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4871, Invalid=13761, Unknown=0, NotChecked=0, Total=18632 [2018-01-31 10:16:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-31 10:16:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 259. [2018-01-31 10:16:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-31 10:16:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 270 transitions. [2018-01-31 10:16:30,652 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 270 transitions. Word has length 212 [2018-01-31 10:16:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:30,652 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 270 transitions. [2018-01-31 10:16:30,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-01-31 10:16:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 270 transitions. [2018-01-31 10:16:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-31 10:16:30,653 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:30,653 INFO L351 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:30,653 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 10:16:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash 728479449, now seen corresponding path program 23 times [2018-01-31 10:16:30,653 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:30,653 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:30,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:30,654 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:30,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:30,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:31,704 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:31,704 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 10:16:31,709 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:16:31,719 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,720 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,722 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,724 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,729 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,731 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,736 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,743 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,747 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,764 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,805 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,825 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,843 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,903 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,921 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:31,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:32,006 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:32,062 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:32,063 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:32,067 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:32,866 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:32,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 97 [2018-01-31 10:16:32,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-01-31 10:16:32,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-01-31 10:16:32,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1872, Invalid=7440, Unknown=0, NotChecked=0, Total=9312 [2018-01-31 10:16:32,867 INFO L87 Difference]: Start difference. First operand 259 states and 270 transitions. Second operand 97 states. [2018-01-31 10:16:34,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:34,578 INFO L93 Difference]: Finished difference Result 301 states and 316 transitions. [2018-01-31 10:16:34,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 10:16:34,578 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 220 [2018-01-31 10:16:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:34,579 INFO L225 Difference]: With dead ends: 301 [2018-01-31 10:16:34,579 INFO L226 Difference]: Without dead ends: 272 [2018-01-31 10:16:34,580 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5843 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5299, Invalid=15007, Unknown=0, NotChecked=0, Total=20306 [2018-01-31 10:16:34,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-31 10:16:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2018-01-31 10:16:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-31 10:16:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 278 transitions. [2018-01-31 10:16:34,583 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 278 transitions. Word has length 220 [2018-01-31 10:16:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:34,594 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 278 transitions. [2018-01-31 10:16:34,594 INFO L433 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-01-31 10:16:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 278 transitions. [2018-01-31 10:16:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-01-31 10:16:34,594 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:34,594 INFO L351 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:34,594 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 10:16:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2126213369, now seen corresponding path program 24 times [2018-01-31 10:16:34,595 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:34,595 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:34,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:34,595 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:34,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:34,617 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:35,967 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:35,967 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 10:16:35,971 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:16:35,985 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:35,995 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,005 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,016 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,043 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,054 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,065 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,132 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,241 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,418 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,474 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,515 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,760 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:36,822 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:37,448 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:37,872 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:38,084 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:38,500 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:39,930 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:40,651 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:41,184 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:16:41,186 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:41,194 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:42,050 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:42,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 101 [2018-01-31 10:16:42,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-01-31 10:16:42,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-01-31 10:16:42,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2025, Invalid=8075, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 10:16:42,052 INFO L87 Difference]: Start difference. First operand 267 states and 278 transitions. Second operand 101 states. [2018-01-31 10:16:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:44,150 INFO L93 Difference]: Finished difference Result 309 states and 324 transitions. [2018-01-31 10:16:44,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 10:16:44,150 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 228 [2018-01-31 10:16:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:44,151 INFO L225 Difference]: With dead ends: 309 [2018-01-31 10:16:44,151 INFO L226 Difference]: Without dead ends: 280 [2018-01-31 10:16:44,152 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6361 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5745, Invalid=16307, Unknown=0, NotChecked=0, Total=22052 [2018-01-31 10:16:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-01-31 10:16:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2018-01-31 10:16:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-01-31 10:16:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 286 transitions. [2018-01-31 10:16:44,155 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 286 transitions. Word has length 228 [2018-01-31 10:16:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:44,155 INFO L432 AbstractCegarLoop]: Abstraction has 275 states and 286 transitions. [2018-01-31 10:16:44,155 INFO L433 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-01-31 10:16:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 286 transitions. [2018-01-31 10:16:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-01-31 10:16:44,156 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:44,156 INFO L351 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:44,156 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 10:16:44,156 INFO L82 PathProgramCache]: Analyzing trace with hash -518956747, now seen corresponding path program 25 times [2018-01-31 10:16:44,156 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:44,156 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:44,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:44,157 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:44,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:44,168 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:45,387 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:45,387 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:16:45,392 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:16:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:45,429 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:46,442 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:46,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 105 [2018-01-31 10:16:46,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-01-31 10:16:46,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-01-31 10:16:46,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2184, Invalid=8736, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 10:16:46,444 INFO L87 Difference]: Start difference. First operand 275 states and 286 transitions. Second operand 105 states. [2018-01-31 10:16:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:48,581 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2018-01-31 10:16:48,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-31 10:16:48,581 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 236 [2018-01-31 10:16:48,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:48,582 INFO L225 Difference]: With dead ends: 317 [2018-01-31 10:16:48,582 INFO L226 Difference]: Without dead ends: 288 [2018-01-31 10:16:48,583 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6901 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=6209, Invalid=17661, Unknown=0, NotChecked=0, Total=23870 [2018-01-31 10:16:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-01-31 10:16:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2018-01-31 10:16:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-31 10:16:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 294 transitions. [2018-01-31 10:16:48,586 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 294 transitions. Word has length 236 [2018-01-31 10:16:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:48,586 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 294 transitions. [2018-01-31 10:16:48,586 INFO L433 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-01-31 10:16:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 294 transitions. [2018-01-31 10:16:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-01-31 10:16:48,587 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:48,587 INFO L351 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:48,587 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 10:16:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1488983395, now seen corresponding path program 26 times [2018-01-31 10:16:48,588 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:48,588 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:48,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:48,588 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:16:48,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:48,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:49,857 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:49,857 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:16:49,862 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:16:49,876 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:49,899 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:16:49,902 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:49,904 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:16:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:50,932 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:16:50,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 109 [2018-01-31 10:16:50,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-01-31 10:16:50,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-01-31 10:16:50,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=9423, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 10:16:50,934 INFO L87 Difference]: Start difference. First operand 283 states and 294 transitions. Second operand 109 states. [2018-01-31 10:16:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:16:53,007 INFO L93 Difference]: Finished difference Result 325 states and 340 transitions. [2018-01-31 10:16:53,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 10:16:53,008 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 244 [2018-01-31 10:16:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:16:53,008 INFO L225 Difference]: With dead ends: 325 [2018-01-31 10:16:53,009 INFO L226 Difference]: Without dead ends: 296 [2018-01-31 10:16:53,010 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7463 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6691, Invalid=19069, Unknown=0, NotChecked=0, Total=25760 [2018-01-31 10:16:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-01-31 10:16:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 291. [2018-01-31 10:16:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-01-31 10:16:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 302 transitions. [2018-01-31 10:16:53,013 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 302 transitions. Word has length 244 [2018-01-31 10:16:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:16:53,013 INFO L432 AbstractCegarLoop]: Abstraction has 291 states and 302 transitions. [2018-01-31 10:16:53,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-01-31 10:16:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 302 transitions. [2018-01-31 10:16:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-01-31 10:16:53,014 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:16:53,014 INFO L351 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:53,014 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 10:16:53,014 INFO L82 PathProgramCache]: Analyzing trace with hash 675201937, now seen corresponding path program 27 times [2018-01-31 10:16:53,014 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:16:53,015 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:16:53,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:53,015 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:16:53,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:16:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:16:53,025 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:16:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:16:54,750 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:16:54,750 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:16:54,755 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:16:54,770 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,772 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,774 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,777 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,785 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,789 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,797 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,803 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,814 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,843 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,857 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:54,902 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:55,015 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:55,081 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:55,192 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:55,285 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:55,566 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:55,671 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:56,100 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:56,435 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:56,801 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:56,970 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:57,583 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:58,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:58,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:59,217 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:59,630 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:59,979 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:16:59,982 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:16:59,988 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:17:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:01,266 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:17:01,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 113 [2018-01-31 10:17:01,266 INFO L409 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-01-31 10:17:01,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-01-31 10:17:01,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2520, Invalid=10136, Unknown=0, NotChecked=0, Total=12656 [2018-01-31 10:17:01,268 INFO L87 Difference]: Start difference. First operand 291 states and 302 transitions. Second operand 113 states. [2018-01-31 10:17:03,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:17:03,529 INFO L93 Difference]: Finished difference Result 333 states and 348 transitions. [2018-01-31 10:17:03,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 10:17:03,529 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 252 [2018-01-31 10:17:03,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:17:03,530 INFO L225 Difference]: With dead ends: 333 [2018-01-31 10:17:03,530 INFO L226 Difference]: Without dead ends: 304 [2018-01-31 10:17:03,531 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8047 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7191, Invalid=20531, Unknown=0, NotChecked=0, Total=27722 [2018-01-31 10:17:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-31 10:17:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2018-01-31 10:17:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-01-31 10:17:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 310 transitions. [2018-01-31 10:17:03,534 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 310 transitions. Word has length 252 [2018-01-31 10:17:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:17:03,534 INFO L432 AbstractCegarLoop]: Abstraction has 299 states and 310 transitions. [2018-01-31 10:17:03,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-01-31 10:17:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 310 transitions. [2018-01-31 10:17:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-01-31 10:17:03,535 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:17:03,535 INFO L351 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:03,535 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 10:17:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1048878145, now seen corresponding path program 28 times [2018-01-31 10:17:03,535 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:17:03,535 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:17:03,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:03,536 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:17:03,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:03,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:17:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:05,371 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:17:05,371 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 10:17:05,376 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:17:05,721 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:17:05,725 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:17:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:06,917 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:17:06,918 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 117 [2018-01-31 10:17:06,918 INFO L409 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-01-31 10:17:06,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-01-31 10:17:06,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2697, Invalid=10875, Unknown=0, NotChecked=0, Total=13572 [2018-01-31 10:17:06,919 INFO L87 Difference]: Start difference. First operand 299 states and 310 transitions. Second operand 117 states. [2018-01-31 10:17:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:17:09,326 INFO L93 Difference]: Finished difference Result 341 states and 356 transitions. [2018-01-31 10:17:09,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 10:17:09,326 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 260 [2018-01-31 10:17:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:17:09,327 INFO L225 Difference]: With dead ends: 341 [2018-01-31 10:17:09,327 INFO L226 Difference]: Without dead ends: 312 [2018-01-31 10:17:09,329 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8653 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7709, Invalid=22047, Unknown=0, NotChecked=0, Total=29756 [2018-01-31 10:17:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-31 10:17:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2018-01-31 10:17:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-31 10:17:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 318 transitions. [2018-01-31 10:17:09,332 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 318 transitions. Word has length 260 [2018-01-31 10:17:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:17:09,332 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 318 transitions. [2018-01-31 10:17:09,333 INFO L433 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-01-31 10:17:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 318 transitions. [2018-01-31 10:17:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-01-31 10:17:09,333 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:17:09,333 INFO L351 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:09,333 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 10:17:09,334 INFO L82 PathProgramCache]: Analyzing trace with hash -932973075, now seen corresponding path program 29 times [2018-01-31 10:17:09,334 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:17:09,334 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:17:09,334 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:09,334 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:17:09,334 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:09,346 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:17:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:11,060 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:17:11,060 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:17:11,064 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:17:11,078 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,080 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,081 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,083 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,085 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,087 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,091 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,094 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,100 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,106 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,112 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,139 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,157 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,169 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,190 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,204 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,239 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,278 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,302 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,347 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,414 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,450 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,500 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,668 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,718 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:11,887 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:17:11,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:17:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:13,221 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:17:13,221 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 121 [2018-01-31 10:17:13,221 INFO L409 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-01-31 10:17:13,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-01-31 10:17:13,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2880, Invalid=11640, Unknown=0, NotChecked=0, Total=14520 [2018-01-31 10:17:13,223 INFO L87 Difference]: Start difference. First operand 307 states and 318 transitions. Second operand 121 states. [2018-01-31 10:17:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:17:15,760 INFO L93 Difference]: Finished difference Result 349 states and 364 transitions. [2018-01-31 10:17:15,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-31 10:17:15,761 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 268 [2018-01-31 10:17:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:17:15,761 INFO L225 Difference]: With dead ends: 349 [2018-01-31 10:17:15,762 INFO L226 Difference]: Without dead ends: 320 [2018-01-31 10:17:15,763 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9281 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8245, Invalid=23617, Unknown=0, NotChecked=0, Total=31862 [2018-01-31 10:17:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-31 10:17:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2018-01-31 10:17:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-01-31 10:17:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 326 transitions. [2018-01-31 10:17:15,769 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 326 transitions. Word has length 268 [2018-01-31 10:17:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:17:15,769 INFO L432 AbstractCegarLoop]: Abstraction has 315 states and 326 transitions. [2018-01-31 10:17:15,769 INFO L433 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-01-31 10:17:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 326 transitions. [2018-01-31 10:17:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-01-31 10:17:15,770 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:17:15,770 INFO L351 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:15,770 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 10:17:15,770 INFO L82 PathProgramCache]: Analyzing trace with hash 317094427, now seen corresponding path program 30 times [2018-01-31 10:17:15,770 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:17:15,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:17:15,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:15,771 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:17:15,771 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:15,801 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:17:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:17,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:17:17,507 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:17:17,512 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:17:17,527 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,530 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,532 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,534 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,557 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,563 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,593 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,602 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,662 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,696 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,729 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,794 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,808 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:17,980 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:18,133 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:18,189 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:18,444 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:18,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:18,806 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:19,134 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:25,359 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:26,565 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:27,932 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:28,797 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:31,906 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:32,649 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:33,534 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:17:33,538 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:17:33,553 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:17:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:35,145 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:17:35,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 125 [2018-01-31 10:17:35,146 INFO L409 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-01-31 10:17:35,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-01-31 10:17:35,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3069, Invalid=12431, Unknown=0, NotChecked=0, Total=15500 [2018-01-31 10:17:35,147 INFO L87 Difference]: Start difference. First operand 315 states and 326 transitions. Second operand 125 states. [2018-01-31 10:17:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:17:37,973 INFO L93 Difference]: Finished difference Result 357 states and 372 transitions. [2018-01-31 10:17:37,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-01-31 10:17:37,973 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 276 [2018-01-31 10:17:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:17:37,974 INFO L225 Difference]: With dead ends: 357 [2018-01-31 10:17:37,974 INFO L226 Difference]: Without dead ends: 328 [2018-01-31 10:17:37,976 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9931 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8799, Invalid=25241, Unknown=0, NotChecked=0, Total=34040 [2018-01-31 10:17:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-31 10:17:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 323. [2018-01-31 10:17:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-01-31 10:17:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 334 transitions. [2018-01-31 10:17:37,980 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 334 transitions. Word has length 276 [2018-01-31 10:17:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:17:37,980 INFO L432 AbstractCegarLoop]: Abstraction has 323 states and 334 transitions. [2018-01-31 10:17:37,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-01-31 10:17:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 334 transitions. [2018-01-31 10:17:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-01-31 10:17:37,981 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:17:37,981 INFO L351 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:37,981 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 10:17:37,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1460604855, now seen corresponding path program 31 times [2018-01-31 10:17:37,982 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:17:37,982 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:17:37,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:37,982 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:17:37,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:37,995 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:17:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:39,811 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:17:39,811 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:17:39,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:17:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:39,857 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:17:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:41,215 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:17:41,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 129 [2018-01-31 10:17:41,216 INFO L409 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-01-31 10:17:41,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-01-31 10:17:41,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3264, Invalid=13248, Unknown=0, NotChecked=0, Total=16512 [2018-01-31 10:17:41,217 INFO L87 Difference]: Start difference. First operand 323 states and 334 transitions. Second operand 129 states. [2018-01-31 10:17:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:17:44,167 INFO L93 Difference]: Finished difference Result 365 states and 380 transitions. [2018-01-31 10:17:44,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 10:17:44,168 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 284 [2018-01-31 10:17:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:17:44,169 INFO L225 Difference]: With dead ends: 365 [2018-01-31 10:17:44,169 INFO L226 Difference]: Without dead ends: 336 [2018-01-31 10:17:44,171 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10603 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=9371, Invalid=26919, Unknown=0, NotChecked=0, Total=36290 [2018-01-31 10:17:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-31 10:17:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2018-01-31 10:17:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 10:17:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 342 transitions. [2018-01-31 10:17:44,175 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 342 transitions. Word has length 284 [2018-01-31 10:17:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:17:44,175 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 342 transitions. [2018-01-31 10:17:44,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-01-31 10:17:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 342 transitions. [2018-01-31 10:17:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-01-31 10:17:44,176 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:17:44,176 INFO L351 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:44,176 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 10:17:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -999204745, now seen corresponding path program 32 times [2018-01-31 10:17:44,176 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:17:44,176 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:17:44,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:44,177 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:17:44,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:44,191 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:17:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:46,142 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:17:46,142 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:17:46,147 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:17:46,162 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:46,184 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:17:46,197 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:17:46,200 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:17:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:48,110 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:17:48,110 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 133 [2018-01-31 10:17:48,111 INFO L409 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-01-31 10:17:48,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-01-31 10:17:48,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3465, Invalid=14091, Unknown=0, NotChecked=0, Total=17556 [2018-01-31 10:17:48,113 INFO L87 Difference]: Start difference. First operand 331 states and 342 transitions. Second operand 133 states. [2018-01-31 10:17:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:17:51,092 INFO L93 Difference]: Finished difference Result 373 states and 388 transitions. [2018-01-31 10:17:51,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-01-31 10:17:51,092 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 292 [2018-01-31 10:17:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:17:51,093 INFO L225 Difference]: With dead ends: 373 [2018-01-31 10:17:51,093 INFO L226 Difference]: Without dead ends: 344 [2018-01-31 10:17:51,094 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11297 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9961, Invalid=28651, Unknown=0, NotChecked=0, Total=38612 [2018-01-31 10:17:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-31 10:17:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 339. [2018-01-31 10:17:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-31 10:17:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 350 transitions. [2018-01-31 10:17:51,098 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 350 transitions. Word has length 292 [2018-01-31 10:17:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:17:51,099 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 350 transitions. [2018-01-31 10:17:51,099 INFO L433 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-01-31 10:17:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 350 transitions. [2018-01-31 10:17:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-01-31 10:17:51,100 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:17:51,101 INFO L351 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:51,101 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 10:17:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash -782912859, now seen corresponding path program 33 times [2018-01-31 10:17:51,102 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:17:51,102 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:17:51,102 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:51,102 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:17:51,102 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:17:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:17:51,116 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:17:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:17:53,050 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:17:53,050 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:17:53,055 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:17:53,070 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,073 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,077 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,080 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,088 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,092 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,100 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,106 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,117 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,161 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,206 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,320 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,499 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:53,982 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:54,414 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:54,750 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:55,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:55,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:55,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:56,497 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:57,157 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:57,528 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:57,937 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:17:58,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:00,689 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:01,935 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:02,515 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:03,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:03,882 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:05,749 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:18:05,752 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:18:05,761 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:18:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:18:07,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:18:07,373 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 137 [2018-01-31 10:18:07,374 INFO L409 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-01-31 10:18:07,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-01-31 10:18:07,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3672, Invalid=14960, Unknown=0, NotChecked=0, Total=18632 [2018-01-31 10:18:07,375 INFO L87 Difference]: Start difference. First operand 339 states and 350 transitions. Second operand 137 states. [2018-01-31 10:18:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:18:10,529 INFO L93 Difference]: Finished difference Result 381 states and 396 transitions. [2018-01-31 10:18:10,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-01-31 10:18:10,530 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 300 [2018-01-31 10:18:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:18:10,531 INFO L225 Difference]: With dead ends: 381 [2018-01-31 10:18:10,531 INFO L226 Difference]: Without dead ends: 352 [2018-01-31 10:18:10,532 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12013 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=10569, Invalid=30437, Unknown=0, NotChecked=0, Total=41006 [2018-01-31 10:18:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-31 10:18:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2018-01-31 10:18:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-31 10:18:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 358 transitions. [2018-01-31 10:18:10,536 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 358 transitions. Word has length 300 [2018-01-31 10:18:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:18:10,536 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 358 transitions. [2018-01-31 10:18:10,536 INFO L433 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-01-31 10:18:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 358 transitions. [2018-01-31 10:18:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-01-31 10:18:10,539 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:18:10,539 INFO L351 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:10,539 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 10:18:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1837891283, now seen corresponding path program 34 times [2018-01-31 10:18:10,539 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:18:10,539 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:18:10,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:18:10,539 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:18:10,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:18:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:18:10,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-31 10:18:11,751 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 10:18:11,753 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 10:18:11,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:18:11 BasicIcfg [2018-01-31 10:18:11,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 10:18:11,754 INFO L168 Benchmark]: Toolchain (without parser) took 152954.27 ms. Allocated memory was 147.3 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 111.9 MB in the beginning and 322.4 MB in the end (delta: -210.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-31 10:18:11,754 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 147.3 MB. Free memory is still 117.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 10:18:11,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 111.89 ms. Allocated memory is still 147.3 MB. Free memory was 111.9 MB in the beginning and 103.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. [2018-01-31 10:18:11,755 INFO L168 Benchmark]: Boogie Preprocessor took 18.99 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 101.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-31 10:18:11,755 INFO L168 Benchmark]: RCFGBuilder took 395.97 ms. Allocated memory is still 147.3 MB. Free memory was 101.4 MB in the beginning and 81.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 5.3 GB. [2018-01-31 10:18:11,755 INFO L168 Benchmark]: IcfgTransformer took 7008.40 ms. Allocated memory was 147.3 MB in the beginning and 915.9 MB in the end (delta: 768.6 MB). Free memory was 81.4 MB in the beginning and 133.9 MB in the end (delta: -52.4 MB). Peak memory consumption was 716.2 MB. Max. memory is 5.3 GB. [2018-01-31 10:18:11,755 INFO L168 Benchmark]: TraceAbstraction took 145406.35 ms. Allocated memory was 915.9 MB in the beginning and 1.6 GB in the end (delta: 723.0 MB). Free memory was 133.8 MB in the beginning and 322.4 MB in the end (delta: -188.5 MB). Peak memory consumption was 534.5 MB. Max. memory is 5.3 GB. [2018-01-31 10:18:11,756 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 147.3 MB. Free memory is still 117.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 111.89 ms. Allocated memory is still 147.3 MB. Free memory was 111.9 MB in the beginning and 103.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.99 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 101.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 395.97 ms. Allocated memory is still 147.3 MB. Free memory was 101.4 MB in the beginning and 81.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 5.3 GB. * IcfgTransformer took 7008.40 ms. Allocated memory was 147.3 MB in the beginning and 915.9 MB in the end (delta: 768.6 MB). Free memory was 81.4 MB in the beginning and 133.9 MB in the end (delta: -52.4 MB). Peak memory consumption was 716.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 145406.35 ms. Allocated memory was 915.9 MB in the beginning and 1.6 GB in the end (delta: 723.0 MB). Free memory was 133.8 MB in the beginning and 322.4 MB in the end (delta: -188.5 MB). Peak memory consumption was 534.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 87 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 1657 LocStat_NO_SUPPORTING_DISEQUALITIES : 2978 LocStat_NO_DISJUNCTIONS : -174 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 118 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 175 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 116 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.296316 RENAME_VARIABLES(MILLISECONDS) : 0.198364 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.283643 PROJECTAWAY(MILLISECONDS) : 0.092123 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.037960 DISJOIN(MILLISECONDS) : 0.460778 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.210846 ADD_EQUALITY(MILLISECONDS) : 0.004517 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.002245 #CONJOIN_DISJUNCTIVE : 1043 #RENAME_VARIABLES : 2297 #UNFREEZE : 0 #CONJOIN : 1493 #PROJECTAWAY : 1424 #ADD_WEAK_EQUALITY : 14 #DISJOIN : 225 #RENAME_VARIABLES_DISJUNCTIVE : 2331 #ADD_EQUALITY : 180 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 6 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 6 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 3 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 6 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 2 COUNT_ARRAY_READS for [#memory_int] : 10 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 50). Cancelled while BasicCegarLoop was analyzing trace of length 309 with TraceHistMax 35, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. TIMEOUT Result, 145.3s OverallTime, 36 OverallIterations, 35 TraceHistogramMax, 44.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2856 SDtfs, 8684 SDslu, 37257 SDs, 0 SdLazy, 11511 SolverSat, 1805 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8059 GetRequests, 4558 SyntacticMatches, 34 SemanticMatches, 3467 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138413 ImplicationChecksByTransitivity, 81.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 35 MinimizatonAttempts, 170 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 45.3s SatisfiabilityAnalysisTime, 51.6s InterpolantComputationTime, 11423 NumberOfCodeBlocks, 11423 NumberOfCodeBlocksAsserted, 362 NumberOfCheckSat, 11355 ConstructedInterpolants, 0 QuantifiedInterpolants, 12211445 SizeOfPredicates, 1165 NumberOfNonLiveVariables, 11517 ConjunctsInSsa, 1208 ConjunctsInUnsatCore, 68 InterpolantComputations, 2 PerfectInterpolantSequences, 0/97988 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum60_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_10-18-11-762.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum60_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_10-18-11-762.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum60_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_10-18-11-762.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum60_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_10-18-11-762.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum60_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_10-18-11-762.csv Completed graceful shutdown