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/rangesum40_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e-m [2018-01-31 10:13:04,351 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 10:13:04,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 10:13:04,361 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 10:13:04,361 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 10:13:04,362 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 10:13:04,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 10:13:04,363 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 10:13:04,364 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 10:13:04,365 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 10:13:04,365 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 10:13:04,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 10:13:04,366 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 10:13:04,367 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 10:13:04,367 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 10:13:04,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 10:13:04,369 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 10:13:04,370 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 10:13:04,371 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 10:13:04,372 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 10:13:04,373 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 10:13:04,373 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 10:13:04,373 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 10:13:04,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 10:13:04,374 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 10:13:04,375 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 10:13:04,375 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 10:13:04,375 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 10:13:04,376 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 10:13:04,376 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 10:13:04,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 10:13:04,376 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 10:13:04,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 10:13:04,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 10:13:04,382 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 10:13:04,382 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 10:13:04,382 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 10:13:04,382 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 10:13:04,383 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 10:13:04,383 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 10:13:04,384 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 10:13:04,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 10:13:04,384 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 10:13:04,385 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 10:13:04,385 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 10:13:04,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 10:13:04,410 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 10:13:04,412 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 10:13:04,413 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 10:13:04,413 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 10:13:04,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum40_false-unreach-call.i [2018-01-31 10:13:04,488 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 10:13:04,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 10:13:04,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 10:13:04,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 10:13:04,493 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 10:13:04,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5587a0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04, skipping insertion in model container [2018-01-31 10:13:04,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,504 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:13:04,513 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 10:13:04,585 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:13:04,597 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 10:13:04,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04 WrapperNode [2018-01-31 10:13:04,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 10:13:04,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 10:13:04,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 10:13:04,602 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 10:13:04,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (1/1) ... [2018-01-31 10:13:04,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 10:13:04,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 10:13:04,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 10:13:04,622 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 10:13:04,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (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 10:13:04,662 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 10:13:04,662 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 10:13:04,662 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-31 10:13:04,662 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-31 10:13:04,663 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 10:13:04,663 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 10:13:04,664 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 10:13:05,059 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 10:13:05,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:13:05 BoogieIcfgContainer [2018-01-31 10:13:05,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 10:13:05,060 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 10:13:05,060 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 10:13:05,060 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 10:13:05,062 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:13:05" (1/1) ... [2018-01-31 10:13:05,067 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 10:13:05,067 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 10:13:05,068 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 10:13:05,094 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 13 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 10:13:05,112 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 10:13:05,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 10:13:12,378 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 10:13:12,379 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 10:13:12,386 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 10 [2018-01-31 10:13:12,386 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 10:13:12,386 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 10:13:12,386 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 + 156, 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 10:13:12,397 INFO L547 PartitionManager]: partitioning result: [2018-01-31 10:13:12,397 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 10:13:12,398 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 10:13:12,398 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 6 [2018-01-31 10:13:12,398 INFO L564 PartitionManager]: # location blocks :3 [2018-01-31 10:13:12,398 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 10:13:12,398 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 6 [2018-01-31 10:13:12,398 INFO L564 PartitionManager]: # location blocks :2 [2018-01-31 10:13:12,398 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 10:13:12,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:13:12 BasicIcfg [2018-01-31 10:13:12,420 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 10:13:12,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 10:13:12,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 10:13:12,423 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 10:13:12,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:13:04" (1/4) ... [2018-01-31 10:13:12,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f801ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:13:12, skipping insertion in model container [2018-01-31 10:13:12,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:13:04" (2/4) ... [2018-01-31 10:13:12,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f801ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:13:12, skipping insertion in model container [2018-01-31 10:13:12,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:13:05" (3/4) ... [2018-01-31 10:13:12,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f801ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:13:12, skipping insertion in model container [2018-01-31 10:13:12,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:13:12" (4/4) ... [2018-01-31 10:13:12,432 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 10:13:12,442 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 10:13:12,446 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-31 10:13:12,533 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 10:13:12,533 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 10:13:12,533 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 10:13:12,533 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 10:13:12,533 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 10:13:12,533 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 10:13:12,534 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 10:13:12,534 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 10:13:12,534 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 10:13:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-31 10:13:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-31 10:13:12,547 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:12,548 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 10:13:12,548 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-31 10:13:12,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1073882414, now seen corresponding path program 1 times [2018-01-31 10:13:12,552 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:12,552 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:12,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:12,581 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:12,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:12,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:12,643 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 10:13:12,644 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:13:12,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 10:13:12,645 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 10:13:12,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 10:13:12,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 10:13:12,655 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-31 10:13:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:12,676 INFO L93 Difference]: Finished difference Result 157 states and 187 transitions. [2018-01-31 10:13:12,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 10:13:12,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-01-31 10:13:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:12,684 INFO L225 Difference]: With dead ends: 157 [2018-01-31 10:13:12,684 INFO L226 Difference]: Without dead ends: 81 [2018-01-31 10:13:12,686 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 10:13:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-31 10:13:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-31 10:13:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-31 10:13:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2018-01-31 10:13:12,713 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 35 [2018-01-31 10:13:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:12,716 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2018-01-31 10:13:12,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 10:13:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2018-01-31 10:13:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 10:13:12,717 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:12,718 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 10:13:12,718 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-31 10:13:12,718 INFO L82 PathProgramCache]: Analyzing trace with hash -173460809, now seen corresponding path program 1 times [2018-01-31 10:13:12,718 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:12,718 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:12,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:12,719 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:12,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:12,742 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:12,814 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 10:13:12,814 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 10:13:12,814 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 10:13:12,815 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 10:13:12,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 10:13:12,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-31 10:13:12,815 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 4 states. [2018-01-31 10:13:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:12,944 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2018-01-31 10:13:12,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 10:13:12,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-01-31 10:13:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:12,945 INFO L225 Difference]: With dead ends: 117 [2018-01-31 10:13:12,945 INFO L226 Difference]: Without dead ends: 88 [2018-01-31 10:13:12,946 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-31 10:13:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-31 10:13:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-31 10:13:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-31 10:13:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2018-01-31 10:13:12,950 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 36 [2018-01-31 10:13:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:12,950 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2018-01-31 10:13:12,950 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 10:13:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2018-01-31 10:13:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-31 10:13:12,951 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:12,951 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 10:13:12,951 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-31 10:13:12,951 INFO L82 PathProgramCache]: Analyzing trace with hash 858737893, now seen corresponding path program 1 times [2018-01-31 10:13:12,952 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:12,952 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:12,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:12,952 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:12,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:12,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:13,117 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 10:13:13,118 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:13,118 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-31 10:13:13,138 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:13:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:13,178 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:13,337 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 10:13:13,354 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:13,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2018-01-31 10:13:13,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 10:13:13,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 10:13:13,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 10:13:13,355 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 9 states. [2018-01-31 10:13:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:13,448 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2018-01-31 10:13:13,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 10:13:13,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-01-31 10:13:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:13,449 INFO L225 Difference]: With dead ends: 125 [2018-01-31 10:13:13,449 INFO L226 Difference]: Without dead ends: 96 [2018-01-31 10:13:13,450 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-01-31 10:13:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-31 10:13:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2018-01-31 10:13:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-01-31 10:13:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2018-01-31 10:13:13,455 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 44 [2018-01-31 10:13:13,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:13,455 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2018-01-31 10:13:13,455 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 10:13:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2018-01-31 10:13:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-31 10:13:13,456 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:13,456 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 10:13:13,456 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-31 10:13:13,456 INFO L82 PathProgramCache]: Analyzing trace with hash 575101203, now seen corresponding path program 2 times [2018-01-31 10:13:13,456 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:13,456 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:13,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:13,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:13,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:13,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:13,638 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 10:13:13,638 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:13,638 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 10:13:13,654 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:13:13,669 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:13,680 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:13,689 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:13,691 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:13,998 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 10:13:14,030 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:14,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-01-31 10:13:14,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-31 10:13:14,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-31 10:13:14,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-01-31 10:13:14,031 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 13 states. [2018-01-31 10:13:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:14,302 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2018-01-31 10:13:14,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 10:13:14,302 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-01-31 10:13:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:14,303 INFO L225 Difference]: With dead ends: 133 [2018-01-31 10:13:14,303 INFO L226 Difference]: Without dead ends: 104 [2018-01-31 10:13:14,304 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-01-31 10:13:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-31 10:13:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2018-01-31 10:13:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-31 10:13:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2018-01-31 10:13:14,308 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 52 [2018-01-31 10:13:14,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:14,308 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2018-01-31 10:13:14,308 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-31 10:13:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2018-01-31 10:13:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-31 10:13:14,309 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:14,309 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 10:13:14,309 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-31 10:13:14,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1390368577, now seen corresponding path program 3 times [2018-01-31 10:13:14,309 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:14,309 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:14,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:14,310 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:14,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:14,322 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:14,425 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 10:13:14,425 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:14,425 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 10:13:14,431 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:13:14,442 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:14,445 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:14,447 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:14,450 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:14,454 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:14,458 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:14,542 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 10:13:14,559 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:14,559 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2018-01-31 10:13:14,559 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-31 10:13:14,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-31 10:13:14,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-01-31 10:13:14,560 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 17 states. [2018-01-31 10:13:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:14,728 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2018-01-31 10:13:14,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-31 10:13:14,728 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2018-01-31 10:13:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:14,729 INFO L225 Difference]: With dead ends: 141 [2018-01-31 10:13:14,729 INFO L226 Difference]: Without dead ends: 112 [2018-01-31 10:13:14,729 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-01-31 10:13:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-01-31 10:13:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2018-01-31 10:13:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-31 10:13:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2018-01-31 10:13:14,733 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 60 [2018-01-31 10:13:14,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:14,733 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2018-01-31 10:13:14,733 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-31 10:13:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2018-01-31 10:13:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-01-31 10:13:14,734 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:14,735 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 10:13:14,735 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-31 10:13:14,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2031794321, now seen corresponding path program 4 times [2018-01-31 10:13:14,735 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:14,735 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:14,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:14,735 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:14,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:14,746 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:14,916 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 10:13:14,917 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:14,917 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 10:13:14,924 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:13:14,960 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:14,962 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:15,112 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 10:13:15,128 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:15,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2018-01-31 10:13:15,129 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-31 10:13:15,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-31 10:13:15,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2018-01-31 10:13:15,129 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 21 states. [2018-01-31 10:13:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:15,381 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2018-01-31 10:13:15,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-31 10:13:15,382 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-01-31 10:13:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:15,382 INFO L225 Difference]: With dead ends: 149 [2018-01-31 10:13:15,382 INFO L226 Difference]: Without dead ends: 120 [2018-01-31 10:13:15,384 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:13:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-31 10:13:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 115. [2018-01-31 10:13:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-31 10:13:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2018-01-31 10:13:15,391 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 68 [2018-01-31 10:13:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:15,399 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2018-01-31 10:13:15,399 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-31 10:13:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2018-01-31 10:13:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-01-31 10:13:15,400 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:15,400 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 10:13:15,400 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-31 10:13:15,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1303959139, now seen corresponding path program 5 times [2018-01-31 10:13:15,400 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:15,401 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:15,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:15,401 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:15,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:15,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:15,569 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 10:13:15,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:15,569 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 10:13:15,573 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:13:15,582 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:15,584 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:15,589 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:15,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:15,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:15,598 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:15,600 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:15,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:15,688 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 10:13:15,705 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:15,705 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-01-31 10:13:15,705 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-31 10:13:15,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-31 10:13:15,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2018-01-31 10:13:15,706 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 25 states. [2018-01-31 10:13:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:15,947 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2018-01-31 10:13:15,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-31 10:13:15,947 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 76 [2018-01-31 10:13:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:15,948 INFO L225 Difference]: With dead ends: 157 [2018-01-31 10:13:15,948 INFO L226 Difference]: Without dead ends: 128 [2018-01-31 10:13:15,949 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=841, Unknown=0, NotChecked=0, Total=1190 [2018-01-31 10:13:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-01-31 10:13:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2018-01-31 10:13:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-31 10:13:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2018-01-31 10:13:15,953 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 76 [2018-01-31 10:13:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:15,953 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2018-01-31 10:13:15,953 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-31 10:13:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2018-01-31 10:13:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-31 10:13:15,955 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:15,955 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 10:13:15,955 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-31 10:13:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash -84738613, now seen corresponding path program 6 times [2018-01-31 10:13:15,955 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:15,955 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:15,955 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:15,955 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:15,956 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:15,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:16,292 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 10:13:16,292 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:16,292 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 10:13:16,301 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:13:16,316 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,321 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,323 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,326 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,330 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,338 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,342 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:16,343 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:16,344 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:16,446 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 10:13:16,464 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:16,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2018-01-31 10:13:16,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-31 10:13:16,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-31 10:13:16,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2018-01-31 10:13:16,465 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 29 states. [2018-01-31 10:13:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:16,707 INFO L93 Difference]: Finished difference Result 165 states and 180 transitions. [2018-01-31 10:13:16,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-31 10:13:16,707 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 84 [2018-01-31 10:13:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:16,708 INFO L225 Difference]: With dead ends: 165 [2018-01-31 10:13:16,708 INFO L226 Difference]: Without dead ends: 136 [2018-01-31 10:13:16,709 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=1169, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:13:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-01-31 10:13:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2018-01-31 10:13:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-31 10:13:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2018-01-31 10:13:16,714 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 84 [2018-01-31 10:13:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:16,714 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2018-01-31 10:13:16,714 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-31 10:13:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2018-01-31 10:13:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-31 10:13:16,715 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:16,715 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 10:13:16,715 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-31 10:13:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1193884679, now seen corresponding path program 7 times [2018-01-31 10:13:16,715 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:16,715 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:16,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:16,716 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:16,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:16,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:17,132 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 10:13:17,133 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:17,133 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 10:13:17,138 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:17,155 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:17,291 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 10:13:17,307 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:17,307 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2018-01-31 10:13:17,308 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-31 10:13:17,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-31 10:13:17,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 10:13:17,308 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand 33 states. [2018-01-31 10:13:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:17,662 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2018-01-31 10:13:17,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-31 10:13:17,663 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 92 [2018-01-31 10:13:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:17,663 INFO L225 Difference]: With dead ends: 173 [2018-01-31 10:13:17,663 INFO L226 Difference]: Without dead ends: 144 [2018-01-31 10:13:17,664 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1551, Unknown=0, NotChecked=0, Total=2162 [2018-01-31 10:13:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-31 10:13:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2018-01-31 10:13:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-31 10:13:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2018-01-31 10:13:17,667 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 92 [2018-01-31 10:13:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:17,667 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2018-01-31 10:13:17,667 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-31 10:13:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2018-01-31 10:13:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-01-31 10:13:17,668 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:17,668 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 10:13:17,668 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-31 10:13:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1977646119, now seen corresponding path program 8 times [2018-01-31 10:13:17,668 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:17,668 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:17,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:17,669 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:17,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:17,677 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:18,181 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 10:13:18,181 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:18,181 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:13:18,191 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:13:18,200 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:18,208 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:18,209 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:18,211 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:18,363 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 10:13:18,381 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:18,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2018-01-31 10:13:18,381 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-31 10:13:18,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-31 10:13:18,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2018-01-31 10:13:18,382 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 37 states. [2018-01-31 10:13:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:18,786 INFO L93 Difference]: Finished difference Result 181 states and 196 transitions. [2018-01-31 10:13:18,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-31 10:13:18,787 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 100 [2018-01-31 10:13:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:18,787 INFO L225 Difference]: With dead ends: 181 [2018-01-31 10:13:18,787 INFO L226 Difference]: Without dead ends: 152 [2018-01-31 10:13:18,788 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=769, Invalid=1987, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:13:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-31 10:13:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2018-01-31 10:13:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-31 10:13:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2018-01-31 10:13:18,796 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 100 [2018-01-31 10:13:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:18,796 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2018-01-31 10:13:18,796 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-31 10:13:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2018-01-31 10:13:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-01-31 10:13:18,797 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:18,797 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 10:13:18,797 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-31 10:13:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash -302111147, now seen corresponding path program 9 times [2018-01-31 10:13:18,797 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:18,797 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:18,798 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:18,798 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:18,798 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:18,817 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:19,132 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 10:13:19,132 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:19,132 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 10:13:19,137 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:13:19,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,151 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,154 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,163 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,167 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,171 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,183 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,199 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,214 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:19,215 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:19,217 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:19,394 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 10:13:19,411 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:19,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2018-01-31 10:13:19,412 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-31 10:13:19,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-31 10:13:19,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1280, Unknown=0, NotChecked=0, Total=1640 [2018-01-31 10:13:19,412 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand 41 states. [2018-01-31 10:13:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:19,833 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2018-01-31 10:13:19,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-31 10:13:19,833 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 108 [2018-01-31 10:13:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:19,834 INFO L225 Difference]: With dead ends: 189 [2018-01-31 10:13:19,834 INFO L226 Difference]: Without dead ends: 160 [2018-01-31 10:13:19,834 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=945, Invalid=2477, Unknown=0, NotChecked=0, Total=3422 [2018-01-31 10:13:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-31 10:13:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2018-01-31 10:13:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-31 10:13:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2018-01-31 10:13:19,837 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 108 [2018-01-31 10:13:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:19,837 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2018-01-31 10:13:19,837 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-31 10:13:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2018-01-31 10:13:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-01-31 10:13:19,838 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:19,838 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 10:13:19,838 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-31 10:13:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash 253608579, now seen corresponding path program 10 times [2018-01-31 10:13:19,838 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:19,839 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:19,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:19,839 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:19,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:19,846 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:20,220 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 10:13:20,221 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:20,221 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:13:20,226 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:13:20,256 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:20,257 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:20,736 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 10:13:20,756 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:20,756 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2018-01-31 10:13:20,757 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-31 10:13:20,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-31 10:13:20,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2018-01-31 10:13:20,757 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 45 states. [2018-01-31 10:13:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:21,477 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2018-01-31 10:13:21,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-31 10:13:21,479 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 116 [2018-01-31 10:13:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:21,479 INFO L225 Difference]: With dead ends: 197 [2018-01-31 10:13:21,479 INFO L226 Difference]: Without dead ends: 168 [2018-01-31 10:13:21,480 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 10:13:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-01-31 10:13:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2018-01-31 10:13:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-31 10:13:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2018-01-31 10:13:21,483 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 116 [2018-01-31 10:13:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:21,483 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2018-01-31 10:13:21,483 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-31 10:13:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2018-01-31 10:13:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-01-31 10:13:21,484 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:21,484 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 10:13:21,484 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-31 10:13:21,484 INFO L82 PathProgramCache]: Analyzing trace with hash -114470735, now seen corresponding path program 11 times [2018-01-31 10:13:21,484 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:21,484 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:21,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:21,485 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:21,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:21,493 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:21,834 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 10:13:21,834 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:21,834 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 10:13:21,839 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:13:21,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,849 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,851 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,855 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,862 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,865 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:21,901 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:21,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:22,150 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 10:13:22,170 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:22,170 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2018-01-31 10:13:22,170 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-31 10:13:22,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-31 10:13:22,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=1848, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 10:13:22,171 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand 49 states. [2018-01-31 10:13:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:22,754 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2018-01-31 10:13:22,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-31 10:13:22,754 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 124 [2018-01-31 10:13:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:22,755 INFO L225 Difference]: With dead ends: 205 [2018-01-31 10:13:22,755 INFO L226 Difference]: Without dead ends: 176 [2018-01-31 10:13:22,756 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1351, Invalid=3619, Unknown=0, NotChecked=0, Total=4970 [2018-01-31 10:13:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-31 10:13:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2018-01-31 10:13:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-31 10:13:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2018-01-31 10:13:22,759 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 124 [2018-01-31 10:13:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:22,759 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2018-01-31 10:13:22,759 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-31 10:13:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2018-01-31 10:13:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-01-31 10:13:22,760 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:22,760 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 10:13:22,760 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-31 10:13:22,760 INFO L82 PathProgramCache]: Analyzing trace with hash -31797025, now seen corresponding path program 12 times [2018-01-31 10:13:22,760 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:22,760 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:22,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:22,761 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:22,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:22,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:23,122 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 10:13:23,123 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:23,123 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 10:13:23,127 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:13:23,137 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,140 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,142 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,145 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,149 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,162 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,193 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,265 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,277 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,292 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,328 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:23,328 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:23,331 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:23,669 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 10:13:23,686 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:23,686 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 53 [2018-01-31 10:13:23,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-31 10:13:23,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-31 10:13:23,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=2171, Unknown=0, NotChecked=0, Total=2756 [2018-01-31 10:13:23,688 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand 53 states. [2018-01-31 10:13:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:24,299 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2018-01-31 10:13:24,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-31 10:13:24,299 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 132 [2018-01-31 10:13:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:24,300 INFO L225 Difference]: With dead ends: 213 [2018-01-31 10:13:24,300 INFO L226 Difference]: Without dead ends: 184 [2018-01-31 10:13:24,301 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1581, Invalid=4271, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 10:13:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-01-31 10:13:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2018-01-31 10:13:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-31 10:13:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2018-01-31 10:13:24,304 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 132 [2018-01-31 10:13:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:24,304 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2018-01-31 10:13:24,304 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-31 10:13:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2018-01-31 10:13:24,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-01-31 10:13:24,305 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:24,305 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 10:13:24,305 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-31 10:13:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1579924723, now seen corresponding path program 13 times [2018-01-31 10:13:24,305 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:24,305 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:24,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:24,306 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:24,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:24,313 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:24,729 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 10:13:24,730 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:24,730 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 10:13:24,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:24,756 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:25,058 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 10:13:25,074 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:25,075 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 57 [2018-01-31 10:13:25,075 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-31 10:13:25,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-31 10:13:25,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=2520, Unknown=0, NotChecked=0, Total=3192 [2018-01-31 10:13:25,076 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 57 states. [2018-01-31 10:13:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:25,963 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-31 10:13:25,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-31 10:13:25,964 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 140 [2018-01-31 10:13:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:25,964 INFO L225 Difference]: With dead ends: 221 [2018-01-31 10:13:25,964 INFO L226 Difference]: Without dead ends: 192 [2018-01-31 10:13:25,966 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 10:13:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-31 10:13:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-31 10:13:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-31 10:13:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2018-01-31 10:13:25,969 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 140 [2018-01-31 10:13:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:25,969 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2018-01-31 10:13:25,969 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-31 10:13:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2018-01-31 10:13:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-01-31 10:13:25,970 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:25,970 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 10:13:25,970 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-31 10:13:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1706580165, now seen corresponding path program 14 times [2018-01-31 10:13:25,970 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:25,970 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:25,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:25,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:25,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:25,979 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:26,444 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 10:13:26,444 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:26,444 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 10:13:26,449 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:13:26,461 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:26,472 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:26,474 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:26,476 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:26,828 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 10:13:26,844 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:26,844 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 61 [2018-01-31 10:13:26,845 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-31 10:13:26,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-31 10:13:26,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=2895, Unknown=0, NotChecked=0, Total=3660 [2018-01-31 10:13:26,846 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand 61 states. [2018-01-31 10:13:27,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:27,700 INFO L93 Difference]: Finished difference Result 229 states and 244 transitions. [2018-01-31 10:13:27,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-31 10:13:27,700 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 148 [2018-01-31 10:13:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:27,701 INFO L225 Difference]: With dead ends: 229 [2018-01-31 10:13:27,701 INFO L226 Difference]: Without dead ends: 200 [2018-01-31 10:13:27,702 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 10:13:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-31 10:13:27,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-31 10:13:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-31 10:13:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 206 transitions. [2018-01-31 10:13:27,705 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 206 transitions. Word has length 148 [2018-01-31 10:13:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:27,706 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 206 transitions. [2018-01-31 10:13:27,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-31 10:13:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 206 transitions. [2018-01-31 10:13:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-01-31 10:13:27,706 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:27,706 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 10:13:27,706 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-31 10:13:27,706 INFO L82 PathProgramCache]: Analyzing trace with hash -815596183, now seen corresponding path program 15 times [2018-01-31 10:13:27,706 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:27,707 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:27,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:27,707 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:27,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:27,715 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:28,628 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 10:13:28,629 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:28,629 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 10:13:28,633 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:13:28,644 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,646 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,648 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,651 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,660 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,664 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,677 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,689 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,695 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,718 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,741 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,793 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,810 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,847 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,929 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:28,930 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:28,932 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:29,349 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 10:13:29,368 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:29,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 65 [2018-01-31 10:13:29,368 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-01-31 10:13:29,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-01-31 10:13:29,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=3296, Unknown=0, NotChecked=0, Total=4160 [2018-01-31 10:13:29,369 INFO L87 Difference]: Start difference. First operand 195 states and 206 transitions. Second operand 65 states. [2018-01-31 10:13:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:30,283 INFO L93 Difference]: Finished difference Result 237 states and 252 transitions. [2018-01-31 10:13:30,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-31 10:13:30,283 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 156 [2018-01-31 10:13:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:30,284 INFO L225 Difference]: With dead ends: 237 [2018-01-31 10:13:30,284 INFO L226 Difference]: Without dead ends: 208 [2018-01-31 10:13:30,285 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2491 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2379, Invalid=6551, Unknown=0, NotChecked=0, Total=8930 [2018-01-31 10:13:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-31 10:13:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2018-01-31 10:13:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-31 10:13:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 214 transitions. [2018-01-31 10:13:30,295 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 214 transitions. Word has length 156 [2018-01-31 10:13:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:30,295 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 214 transitions. [2018-01-31 10:13:30,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-01-31 10:13:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 214 transitions. [2018-01-31 10:13:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-31 10:13:30,296 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:30,296 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 10:13:30,296 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-31 10:13:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1528055191, now seen corresponding path program 16 times [2018-01-31 10:13:30,296 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:30,296 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:30,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:30,296 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:30,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:30,306 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:30,938 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 10:13:30,938 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:30,938 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:13:30,942 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:13:31,017 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:31,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:31,572 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 10:13:31,591 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:31,591 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 69 [2018-01-31 10:13:31,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-31 10:13:31,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-31 10:13:31,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=969, Invalid=3723, Unknown=0, NotChecked=0, Total=4692 [2018-01-31 10:13:31,593 INFO L87 Difference]: Start difference. First operand 203 states and 214 transitions. Second operand 69 states. [2018-01-31 10:13:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:32,571 INFO L93 Difference]: Finished difference Result 245 states and 260 transitions. [2018-01-31 10:13:32,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-31 10:13:32,571 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 164 [2018-01-31 10:13:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:32,572 INFO L225 Difference]: With dead ends: 245 [2018-01-31 10:13:32,572 INFO L226 Difference]: Without dead ends: 216 [2018-01-31 10:13:32,573 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 10:13:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-31 10:13:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2018-01-31 10:13:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-31 10:13:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 222 transitions. [2018-01-31 10:13:32,576 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 222 transitions. Word has length 164 [2018-01-31 10:13:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:32,576 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 222 transitions. [2018-01-31 10:13:32,576 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-31 10:13:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 222 transitions. [2018-01-31 10:13:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-01-31 10:13:32,577 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:32,577 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 10:13:32,577 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-31 10:13:32,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1991671867, now seen corresponding path program 17 times [2018-01-31 10:13:32,577 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:32,577 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:32,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:32,577 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:32,578 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:32,586 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:33,405 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 10:13:33,405 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:33,405 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 10:13:33,409 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:13:33,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,421 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,424 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,429 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,433 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,472 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,485 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,496 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,518 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,530 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,546 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,577 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:33,579 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:33,581 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:34,052 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 10:13:34,070 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:34,070 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 73 [2018-01-31 10:13:34,071 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-31 10:13:34,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-31 10:13:34,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1080, Invalid=4176, Unknown=0, NotChecked=0, Total=5256 [2018-01-31 10:13:34,071 INFO L87 Difference]: Start difference. First operand 211 states and 222 transitions. Second operand 73 states. [2018-01-31 10:13:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:35,431 INFO L93 Difference]: Finished difference Result 253 states and 268 transitions. [2018-01-31 10:13:35,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-31 10:13:35,431 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 172 [2018-01-31 10:13:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:35,432 INFO L225 Difference]: With dead ends: 253 [2018-01-31 10:13:35,432 INFO L226 Difference]: Without dead ends: 224 [2018-01-31 10:13:35,433 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3001, Invalid=8341, Unknown=0, NotChecked=0, Total=11342 [2018-01-31 10:13:35,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-31 10:13:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2018-01-31 10:13:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-31 10:13:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 230 transitions. [2018-01-31 10:13:35,435 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 230 transitions. Word has length 172 [2018-01-31 10:13:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:35,436 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 230 transitions. [2018-01-31 10:13:35,436 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-31 10:13:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 230 transitions. [2018-01-31 10:13:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-01-31 10:13:35,436 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:35,436 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 10:13:35,436 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-31 10:13:35,436 INFO L82 PathProgramCache]: Analyzing trace with hash -672093197, now seen corresponding path program 18 times [2018-01-31 10:13:35,437 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:35,437 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:35,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:35,438 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:35,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:35,447 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:36,287 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 10:13:36,287 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:36,287 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 10:13:36,295 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:13:36,308 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,313 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,316 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,329 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,358 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,364 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,392 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,525 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:36,921 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:37,021 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:37,273 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:37,502 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:37,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:13:37,670 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:37,674 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:38,213 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 10:13:38,232 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:38,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 77 [2018-01-31 10:13:38,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-01-31 10:13:38,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-01-31 10:13:38,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1197, Invalid=4655, Unknown=0, NotChecked=0, Total=5852 [2018-01-31 10:13:38,233 INFO L87 Difference]: Start difference. First operand 219 states and 230 transitions. Second operand 77 states. [2018-01-31 10:13:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:39,388 INFO L93 Difference]: Finished difference Result 261 states and 276 transitions. [2018-01-31 10:13:39,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-01-31 10:13:39,389 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 180 [2018-01-31 10:13:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:39,389 INFO L225 Difference]: With dead ends: 261 [2018-01-31 10:13:39,389 INFO L226 Difference]: Without dead ends: 232 [2018-01-31 10:13:39,390 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3583 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3339, Invalid=9317, Unknown=0, NotChecked=0, Total=12656 [2018-01-31 10:13:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-31 10:13:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2018-01-31 10:13:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-31 10:13:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 238 transitions. [2018-01-31 10:13:39,393 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 238 transitions. Word has length 180 [2018-01-31 10:13:39,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:39,393 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 238 transitions. [2018-01-31 10:13:39,393 INFO L433 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-01-31 10:13:39,393 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 238 transitions. [2018-01-31 10:13:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-01-31 10:13:39,394 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:39,394 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 10:13:39,394 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-31 10:13:39,394 INFO L82 PathProgramCache]: Analyzing trace with hash -151533023, now seen corresponding path program 19 times [2018-01-31 10:13:39,394 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:39,394 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:39,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:39,395 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:39,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:39,403 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:40,412 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 10:13:40,413 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:40,413 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 10:13:40,417 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:40,452 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:41,035 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 10:13:41,052 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:41,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 81 [2018-01-31 10:13:41,052 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-31 10:13:41,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-31 10:13:41,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1320, Invalid=5160, Unknown=0, NotChecked=0, Total=6480 [2018-01-31 10:13:41,053 INFO L87 Difference]: Start difference. First operand 227 states and 238 transitions. Second operand 81 states. [2018-01-31 10:13:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:42,241 INFO L93 Difference]: Finished difference Result 269 states and 284 transitions. [2018-01-31 10:13:42,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-31 10:13:42,241 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 188 [2018-01-31 10:13:42,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:42,242 INFO L225 Difference]: With dead ends: 269 [2018-01-31 10:13:42,242 INFO L226 Difference]: Without dead ends: 240 [2018-01-31 10:13:42,243 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3695, Invalid=10347, Unknown=0, NotChecked=0, Total=14042 [2018-01-31 10:13:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-31 10:13:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2018-01-31 10:13:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-01-31 10:13:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 246 transitions. [2018-01-31 10:13:42,250 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 246 transitions. Word has length 188 [2018-01-31 10:13:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:42,250 INFO L432 AbstractCegarLoop]: Abstraction has 235 states and 246 transitions. [2018-01-31 10:13:42,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-31 10:13:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 246 transitions. [2018-01-31 10:13:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-01-31 10:13:42,251 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:42,251 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 10:13:42,251 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-31 10:13:42,251 INFO L82 PathProgramCache]: Analyzing trace with hash -934487473, now seen corresponding path program 20 times [2018-01-31 10:13:42,251 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:42,251 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:42,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:42,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:13:42,252 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:42,261 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:43,156 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 10:13:43,157 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:43,157 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 10:13:43,161 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:13:43,173 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:43,188 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:43,191 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:43,193 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:44,516 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 10:13:44,532 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:44,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 85 [2018-01-31 10:13:44,533 INFO L409 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-01-31 10:13:44,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-01-31 10:13:44,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1449, Invalid=5691, Unknown=0, NotChecked=0, Total=7140 [2018-01-31 10:13:44,534 INFO L87 Difference]: Start difference. First operand 235 states and 246 transitions. Second operand 85 states. [2018-01-31 10:13:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:45,844 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2018-01-31 10:13:45,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-01-31 10:13:45,845 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 196 [2018-01-31 10:13:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:45,846 INFO L225 Difference]: With dead ends: 277 [2018-01-31 10:13:45,846 INFO L226 Difference]: Without dead ends: 248 [2018-01-31 10:13:45,847 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4421 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4069, Invalid=11431, Unknown=0, NotChecked=0, Total=15500 [2018-01-31 10:13:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-31 10:13:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-01-31 10:13:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-31 10:13:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 254 transitions. [2018-01-31 10:13:45,850 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 254 transitions. Word has length 196 [2018-01-31 10:13:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:45,850 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 254 transitions. [2018-01-31 10:13:45,850 INFO L433 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-01-31 10:13:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 254 transitions. [2018-01-31 10:13:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-01-31 10:13:45,851 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:45,851 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 10:13:45,851 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-31 10:13:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1608375421, now seen corresponding path program 21 times [2018-01-31 10:13:45,851 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:45,851 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:45,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:45,854 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:45,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:45,864 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:47,330 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 10:13:47,330 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:47,330 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 10:13:47,335 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:13:47,348 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,357 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,363 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,368 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,373 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,380 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,389 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,430 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,471 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,511 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,561 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,590 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,610 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,665 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,779 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:47,943 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:48,269 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:48,364 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:48,783 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:49,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:13:49,285 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:49,289 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:49,986 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 10:13:50,005 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:50,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 89 [2018-01-31 10:13:50,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-01-31 10:13:50,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-01-31 10:13:50,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1584, Invalid=6248, Unknown=0, NotChecked=0, Total=7832 [2018-01-31 10:13:50,006 INFO L87 Difference]: Start difference. First operand 243 states and 254 transitions. Second operand 89 states. [2018-01-31 10:13:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:51,777 INFO L93 Difference]: Finished difference Result 285 states and 300 transitions. [2018-01-31 10:13:51,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-31 10:13:51,778 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 204 [2018-01-31 10:13:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:51,779 INFO L225 Difference]: With dead ends: 285 [2018-01-31 10:13:51,779 INFO L226 Difference]: Without dead ends: 256 [2018-01-31 10:13:51,780 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4873 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4461, Invalid=12569, Unknown=0, NotChecked=0, Total=17030 [2018-01-31 10:13:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-01-31 10:13:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2018-01-31 10:13:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-01-31 10:13:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 262 transitions. [2018-01-31 10:13:51,783 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 262 transitions. Word has length 204 [2018-01-31 10:13:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:51,783 INFO L432 AbstractCegarLoop]: Abstraction has 251 states and 262 transitions. [2018-01-31 10:13:51,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-01-31 10:13:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 262 transitions. [2018-01-31 10:13:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-01-31 10:13:51,784 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:51,784 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 10:13:51,784 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-31 10:13:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash 60346539, now seen corresponding path program 22 times [2018-01-31 10:13:51,784 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:51,784 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:51,785 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:51,785 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:51,785 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:51,794 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:52,776 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 10:13:52,776 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:52,776 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 10:13:52,781 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:13:52,960 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:52,963 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:53,792 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 10:13:53,810 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:53,810 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 93 [2018-01-31 10:13:53,810 INFO L409 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-01-31 10:13:53,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-01-31 10:13:53,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1725, Invalid=6831, Unknown=0, NotChecked=0, Total=8556 [2018-01-31 10:13:53,811 INFO L87 Difference]: Start difference. First operand 251 states and 262 transitions. Second operand 93 states. [2018-01-31 10:13:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:55,885 INFO L93 Difference]: Finished difference Result 293 states and 308 transitions. [2018-01-31 10:13:55,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-01-31 10:13:55,885 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 212 [2018-01-31 10:13:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:55,886 INFO L225 Difference]: With dead ends: 293 [2018-01-31 10:13:55,886 INFO L226 Difference]: Without dead ends: 264 [2018-01-31 10:13:55,887 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5347 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4871, Invalid=13761, Unknown=0, NotChecked=0, Total=18632 [2018-01-31 10:13:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-31 10:13:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 259. [2018-01-31 10:13:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-31 10:13:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 270 transitions. [2018-01-31 10:13:55,890 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 270 transitions. Word has length 212 [2018-01-31 10:13:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:55,890 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 270 transitions. [2018-01-31 10:13:55,891 INFO L433 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-01-31 10:13:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 270 transitions. [2018-01-31 10:13:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-31 10:13:55,891 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:55,891 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 10:13:55,891 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-31 10:13:55,891 INFO L82 PathProgramCache]: Analyzing trace with hash 728479449, now seen corresponding path program 23 times [2018-01-31 10:13:55,892 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:55,892 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:55,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:55,892 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:55,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:55,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:13:57,008 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 10:13:57,009 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:13:57,009 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 10:13:57,013 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:13:57,024 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,027 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,028 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,031 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,033 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,036 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,041 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,047 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,052 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,069 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,075 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,095 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,129 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,146 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,183 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,207 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,224 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,253 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,282 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,308 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:13:57,366 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:13:57,369 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:13:58,179 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 10:13:58,197 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:13:58,197 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 97 [2018-01-31 10:13:58,197 INFO L409 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-01-31 10:13:58,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-01-31 10:13:58,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1872, Invalid=7440, Unknown=0, NotChecked=0, Total=9312 [2018-01-31 10:13:58,198 INFO L87 Difference]: Start difference. First operand 259 states and 270 transitions. Second operand 97 states. [2018-01-31 10:13:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:13:59,928 INFO L93 Difference]: Finished difference Result 301 states and 316 transitions. [2018-01-31 10:13:59,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-31 10:13:59,928 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 220 [2018-01-31 10:13:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:13:59,929 INFO L225 Difference]: With dead ends: 301 [2018-01-31 10:13:59,929 INFO L226 Difference]: Without dead ends: 272 [2018-01-31 10:13:59,930 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5843 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5299, Invalid=15007, Unknown=0, NotChecked=0, Total=20306 [2018-01-31 10:13:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-31 10:13:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2018-01-31 10:13:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-31 10:13:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 278 transitions. [2018-01-31 10:13:59,933 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 278 transitions. Word has length 220 [2018-01-31 10:13:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:13:59,934 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 278 transitions. [2018-01-31 10:13:59,934 INFO L433 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-01-31 10:13:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 278 transitions. [2018-01-31 10:13:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-01-31 10:13:59,934 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:13:59,935 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 10:13:59,935 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-31 10:13:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2126213369, now seen corresponding path program 24 times [2018-01-31 10:13:59,935 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:13:59,935 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:13:59,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:59,935 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:13:59,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:13:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:13:59,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:01,539 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 10:14:01,539 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:01,539 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 10:14:01,543 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:14:01,558 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,567 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,578 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,584 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,592 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,604 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,613 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,636 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,663 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,740 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:01,964 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:02,066 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:02,164 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:02,222 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:02,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:02,431 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:02,975 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:03,261 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:03,534 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:03,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:04,543 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:05,318 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:05,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:05,675 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:14:05,681 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:14:06,524 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 10:14:06,544 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:14:06,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 101 [2018-01-31 10:14:06,544 INFO L409 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-01-31 10:14:06,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-01-31 10:14:06,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2025, Invalid=8075, Unknown=0, NotChecked=0, Total=10100 [2018-01-31 10:14:06,545 INFO L87 Difference]: Start difference. First operand 267 states and 278 transitions. Second operand 101 states. [2018-01-31 10:14:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:14:08,655 INFO L93 Difference]: Finished difference Result 309 states and 324 transitions. [2018-01-31 10:14:08,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-31 10:14:08,656 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 228 [2018-01-31 10:14:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:14:08,657 INFO L225 Difference]: With dead ends: 309 [2018-01-31 10:14:08,657 INFO L226 Difference]: Without dead ends: 280 [2018-01-31 10:14:08,658 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6361 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5745, Invalid=16307, Unknown=0, NotChecked=0, Total=22052 [2018-01-31 10:14:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-01-31 10:14:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2018-01-31 10:14:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-01-31 10:14:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 286 transitions. [2018-01-31 10:14:08,662 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 286 transitions. Word has length 228 [2018-01-31 10:14:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:14:08,662 INFO L432 AbstractCegarLoop]: Abstraction has 275 states and 286 transitions. [2018-01-31 10:14:08,663 INFO L433 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-01-31 10:14:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 286 transitions. [2018-01-31 10:14:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-01-31 10:14:08,663 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:14:08,663 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 10:14:08,664 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-31 10:14:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash -518956747, now seen corresponding path program 25 times [2018-01-31 10:14:08,664 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:14:08,664 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:14:08,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:08,664 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:14:08,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:08,677 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:09,917 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 10:14:09,917 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:09,917 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 10:14:09,922 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:14:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:09,958 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:14:10,895 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 10:14:10,912 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:14:10,912 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 105 [2018-01-31 10:14:10,913 INFO L409 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-01-31 10:14:10,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-01-31 10:14:10,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2184, Invalid=8736, Unknown=0, NotChecked=0, Total=10920 [2018-01-31 10:14:10,914 INFO L87 Difference]: Start difference. First operand 275 states and 286 transitions. Second operand 105 states. [2018-01-31 10:14:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:14:13,050 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2018-01-31 10:14:13,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-31 10:14:13,050 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 236 [2018-01-31 10:14:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:14:13,051 INFO L225 Difference]: With dead ends: 317 [2018-01-31 10:14:13,051 INFO L226 Difference]: Without dead ends: 288 [2018-01-31 10:14:13,052 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6901 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6209, Invalid=17661, Unknown=0, NotChecked=0, Total=23870 [2018-01-31 10:14:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-01-31 10:14:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2018-01-31 10:14:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-31 10:14:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 294 transitions. [2018-01-31 10:14:13,056 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 294 transitions. Word has length 236 [2018-01-31 10:14:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:14:13,057 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 294 transitions. [2018-01-31 10:14:13,057 INFO L433 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-01-31 10:14:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 294 transitions. [2018-01-31 10:14:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-01-31 10:14:13,057 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:14:13,058 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 10:14:13,058 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-31 10:14:13,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1488983395, now seen corresponding path program 26 times [2018-01-31 10:14:13,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:14:13,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:14:13,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:13,058 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:14:13,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:13,074 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:14,382 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 10:14:14,382 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:14,382 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 10:14:14,387 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:14:14,401 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:14,420 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:14,423 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:14:14,426 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:14:15,481 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 10:14:15,498 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:14:15,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 109 [2018-01-31 10:14:15,498 INFO L409 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-01-31 10:14:15,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-01-31 10:14:15,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=9423, Unknown=0, NotChecked=0, Total=11772 [2018-01-31 10:14:15,499 INFO L87 Difference]: Start difference. First operand 283 states and 294 transitions. Second operand 109 states. [2018-01-31 10:14:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:14:17,558 INFO L93 Difference]: Finished difference Result 325 states and 340 transitions. [2018-01-31 10:14:17,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-31 10:14:17,558 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 244 [2018-01-31 10:14:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:14:17,559 INFO L225 Difference]: With dead ends: 325 [2018-01-31 10:14:17,559 INFO L226 Difference]: Without dead ends: 296 [2018-01-31 10:14:17,561 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7463 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6691, Invalid=19069, Unknown=0, NotChecked=0, Total=25760 [2018-01-31 10:14:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-01-31 10:14:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 291. [2018-01-31 10:14:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-01-31 10:14:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 302 transitions. [2018-01-31 10:14:17,564 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 302 transitions. Word has length 244 [2018-01-31 10:14:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:14:17,564 INFO L432 AbstractCegarLoop]: Abstraction has 291 states and 302 transitions. [2018-01-31 10:14:17,564 INFO L433 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-01-31 10:14:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 302 transitions. [2018-01-31 10:14:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-01-31 10:14:17,565 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:14:17,565 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 10:14:17,565 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-31 10:14:17,565 INFO L82 PathProgramCache]: Analyzing trace with hash 675201937, now seen corresponding path program 27 times [2018-01-31 10:14:17,565 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:14:17,565 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:14:17,565 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:17,565 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:14:17,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:17,576 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:18,906 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 10:14:18,907 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:18,907 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 10:14:18,911 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:14:18,926 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,928 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,930 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,933 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,942 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,946 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,950 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,960 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,977 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:18,992 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,051 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,087 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,180 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,261 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,281 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,354 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,386 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,555 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:19,632 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:20,079 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:20,436 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:20,575 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:20,829 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:21,084 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:21,288 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:21,534 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:14:21,536 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:14:21,541 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:14:22,646 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 10:14:22,665 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:14:22,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 113 [2018-01-31 10:14:22,666 INFO L409 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-01-31 10:14:22,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-01-31 10:14:22,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2520, Invalid=10136, Unknown=0, NotChecked=0, Total=12656 [2018-01-31 10:14:22,667 INFO L87 Difference]: Start difference. First operand 291 states and 302 transitions. Second operand 113 states. [2018-01-31 10:14:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:14:24,911 INFO L93 Difference]: Finished difference Result 333 states and 348 transitions. [2018-01-31 10:14:24,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-31 10:14:24,911 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 252 [2018-01-31 10:14:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:14:24,912 INFO L225 Difference]: With dead ends: 333 [2018-01-31 10:14:24,912 INFO L226 Difference]: Without dead ends: 304 [2018-01-31 10:14:24,914 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8047 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7191, Invalid=20531, Unknown=0, NotChecked=0, Total=27722 [2018-01-31 10:14:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-31 10:14:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2018-01-31 10:14:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-01-31 10:14:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 310 transitions. [2018-01-31 10:14:24,917 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 310 transitions. Word has length 252 [2018-01-31 10:14:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:14:24,917 INFO L432 AbstractCegarLoop]: Abstraction has 299 states and 310 transitions. [2018-01-31 10:14:24,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-01-31 10:14:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 310 transitions. [2018-01-31 10:14:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-01-31 10:14:24,918 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:14:24,918 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 10:14:24,918 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-31 10:14:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1048878145, now seen corresponding path program 28 times [2018-01-31 10:14:24,918 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:14:24,918 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:14:24,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:24,919 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:14:24,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:24,930 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:26,462 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 10:14:26,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:26,462 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:14:26,467 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:14:26,814 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:14:26,817 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:14:27,979 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 10:14:27,997 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:14:27,997 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 117 [2018-01-31 10:14:27,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-01-31 10:14:27,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-01-31 10:14:27,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2697, Invalid=10875, Unknown=0, NotChecked=0, Total=13572 [2018-01-31 10:14:27,999 INFO L87 Difference]: Start difference. First operand 299 states and 310 transitions. Second operand 117 states. [2018-01-31 10:14:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:14:30,392 INFO L93 Difference]: Finished difference Result 341 states and 356 transitions. [2018-01-31 10:14:30,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-31 10:14:30,392 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 260 [2018-01-31 10:14:30,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:14:30,393 INFO L225 Difference]: With dead ends: 341 [2018-01-31 10:14:30,393 INFO L226 Difference]: Without dead ends: 312 [2018-01-31 10:14:30,394 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8653 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7709, Invalid=22047, Unknown=0, NotChecked=0, Total=29756 [2018-01-31 10:14:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-31 10:14:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2018-01-31 10:14:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-31 10:14:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 318 transitions. [2018-01-31 10:14:30,398 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 318 transitions. Word has length 260 [2018-01-31 10:14:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:14:30,398 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 318 transitions. [2018-01-31 10:14:30,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-01-31 10:14:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 318 transitions. [2018-01-31 10:14:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-01-31 10:14:30,399 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:14:30,399 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 10:14:30,399 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-31 10:14:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash -932973075, now seen corresponding path program 29 times [2018-01-31 10:14:30,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:14:30,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:14:30,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:30,400 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:14:30,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:30,411 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:32,084 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 10:14:32,084 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:32,084 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:14:32,089 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-31 10:14:32,104 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,105 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,107 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,111 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,113 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,117 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,122 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,130 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,137 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,146 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,153 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,163 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,188 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,219 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,239 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,266 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,364 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,385 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,450 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,532 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,606 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,687 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,866 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,946 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:14:32,948 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:14:32,952 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:14:34,255 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 10:14:34,274 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:14:34,274 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 121 [2018-01-31 10:14:34,275 INFO L409 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-01-31 10:14:34,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-01-31 10:14:34,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2880, Invalid=11640, Unknown=0, NotChecked=0, Total=14520 [2018-01-31 10:14:34,276 INFO L87 Difference]: Start difference. First operand 307 states and 318 transitions. Second operand 121 states. [2018-01-31 10:14:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:14:36,913 INFO L93 Difference]: Finished difference Result 349 states and 364 transitions. [2018-01-31 10:14:36,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-31 10:14:36,913 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 268 [2018-01-31 10:14:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:14:36,914 INFO L225 Difference]: With dead ends: 349 [2018-01-31 10:14:36,914 INFO L226 Difference]: Without dead ends: 320 [2018-01-31 10:14:36,916 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 10:14:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-31 10:14:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2018-01-31 10:14:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-01-31 10:14:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 326 transitions. [2018-01-31 10:14:36,919 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 326 transitions. Word has length 268 [2018-01-31 10:14:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:14:36,920 INFO L432 AbstractCegarLoop]: Abstraction has 315 states and 326 transitions. [2018-01-31 10:14:36,920 INFO L433 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-01-31 10:14:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 326 transitions. [2018-01-31 10:14:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-01-31 10:14:36,923 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:14:36,923 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 10:14:36,923 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-31 10:14:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash 317094427, now seen corresponding path program 30 times [2018-01-31 10:14:36,923 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:14:36,923 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:14:36,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:36,924 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:14:36,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:14:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:14:36,957 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:14:38,687 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 10:14:38,688 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:14:38,688 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 10:14:38,692 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-31 10:14:38,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,711 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,714 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,717 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,733 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,744 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,782 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,823 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:38,927 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:39,058 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:39,167 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:39,279 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:39,377 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:39,513 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:39,916 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:40,447 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:40,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:41,075 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:41,744 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:45,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:47,409 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:48,679 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:49,547 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:50,894 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:53,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:54,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:14:56,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:03,236 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-31 10:15:03,243 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:03,261 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:04,867 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 10:15:04,890 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:04,890 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 125 [2018-01-31 10:15:04,890 INFO L409 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-01-31 10:15:04,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-01-31 10:15:04,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3069, Invalid=12431, Unknown=0, NotChecked=0, Total=15500 [2018-01-31 10:15:04,891 INFO L87 Difference]: Start difference. First operand 315 states and 326 transitions. Second operand 125 states. [2018-01-31 10:15:07,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:07,713 INFO L93 Difference]: Finished difference Result 357 states and 372 transitions. [2018-01-31 10:15:07,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-01-31 10:15:07,714 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 276 [2018-01-31 10:15:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:07,715 INFO L225 Difference]: With dead ends: 357 [2018-01-31 10:15:07,715 INFO L226 Difference]: Without dead ends: 328 [2018-01-31 10:15:07,716 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9931 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8799, Invalid=25241, Unknown=0, NotChecked=0, Total=34040 [2018-01-31 10:15:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-31 10:15:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 323. [2018-01-31 10:15:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-01-31 10:15:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 334 transitions. [2018-01-31 10:15:07,719 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 334 transitions. Word has length 276 [2018-01-31 10:15:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:07,719 INFO L432 AbstractCegarLoop]: Abstraction has 323 states and 334 transitions. [2018-01-31 10:15:07,719 INFO L433 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-01-31 10:15:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 334 transitions. [2018-01-31 10:15:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-01-31 10:15:07,720 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:07,720 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 10:15:07,720 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-31 10:15:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1460604855, now seen corresponding path program 31 times [2018-01-31 10:15:07,720 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:07,720 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:07,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:07,721 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:07,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:07,733 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:09,366 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 10:15:09,367 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:09,367 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 10:15:09,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:09,425 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:10,795 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 10:15:10,812 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:10,812 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 129 [2018-01-31 10:15:10,812 INFO L409 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-01-31 10:15:10,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-01-31 10:15:10,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3264, Invalid=13248, Unknown=0, NotChecked=0, Total=16512 [2018-01-31 10:15:10,814 INFO L87 Difference]: Start difference. First operand 323 states and 334 transitions. Second operand 129 states. [2018-01-31 10:15:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:13,777 INFO L93 Difference]: Finished difference Result 365 states and 380 transitions. [2018-01-31 10:15:13,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-31 10:15:13,777 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 284 [2018-01-31 10:15:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:13,778 INFO L225 Difference]: With dead ends: 365 [2018-01-31 10:15:13,778 INFO L226 Difference]: Without dead ends: 336 [2018-01-31 10:15:13,780 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10603 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=9371, Invalid=26919, Unknown=0, NotChecked=0, Total=36290 [2018-01-31 10:15:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-31 10:15:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2018-01-31 10:15:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-31 10:15:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 342 transitions. [2018-01-31 10:15:13,784 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 342 transitions. Word has length 284 [2018-01-31 10:15:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:13,784 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 342 transitions. [2018-01-31 10:15:13,784 INFO L433 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-01-31 10:15:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 342 transitions. [2018-01-31 10:15:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-01-31 10:15:13,785 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:13,785 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 10:15:13,785 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-31 10:15:13,785 INFO L82 PathProgramCache]: Analyzing trace with hash -999204745, now seen corresponding path program 32 times [2018-01-31 10:15:13,785 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:13,785 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:13,785 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:13,786 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 10:15:13,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:13,798 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:15,843 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 10:15:15,843 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:15,843 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 10:15:15,848 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 10:15:15,864 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:15,887 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 10:15:15,900 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:15,903 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:17,951 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 10:15:17,984 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:17,984 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 133 [2018-01-31 10:15:17,984 INFO L409 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-01-31 10:15:17,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-01-31 10:15:17,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3465, Invalid=14091, Unknown=0, NotChecked=0, Total=17556 [2018-01-31 10:15:17,985 INFO L87 Difference]: Start difference. First operand 331 states and 342 transitions. Second operand 133 states. [2018-01-31 10:15:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:20,967 INFO L93 Difference]: Finished difference Result 373 states and 388 transitions. [2018-01-31 10:15:20,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-01-31 10:15:20,967 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 292 [2018-01-31 10:15:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:20,968 INFO L225 Difference]: With dead ends: 373 [2018-01-31 10:15:20,968 INFO L226 Difference]: Without dead ends: 344 [2018-01-31 10:15:20,970 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11297 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9961, Invalid=28651, Unknown=0, NotChecked=0, Total=38612 [2018-01-31 10:15:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-01-31 10:15:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 339. [2018-01-31 10:15:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-31 10:15:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 350 transitions. [2018-01-31 10:15:20,973 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 350 transitions. Word has length 292 [2018-01-31 10:15:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:20,973 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 350 transitions. [2018-01-31 10:15:20,973 INFO L433 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-01-31 10:15:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 350 transitions. [2018-01-31 10:15:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-01-31 10:15:20,985 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:20,985 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 10:15:20,985 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-31 10:15:20,986 INFO L82 PathProgramCache]: Analyzing trace with hash -782912859, now seen corresponding path program 33 times [2018-01-31 10:15:20,986 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:20,986 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:20,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:20,986 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:20,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:21,014 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:22,757 WARN L143 SmtUtils]: Spent 105ms on a formula simplification that was a NOOP. DAG size: 8 [2018-01-31 10:15:23,210 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 10:15:23,211 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:23,211 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 10:15:23,215 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 10:15:23,231 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,237 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,239 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,242 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,251 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,255 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,259 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,268 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,285 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,300 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,358 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,488 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,520 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,568 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,588 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,660 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,692 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,819 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:23,945 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:24,390 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:24,746 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:24,884 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:25,135 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:25,386 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:25,588 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:25,834 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:26,257 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:26,950 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:27,389 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:28,086 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:29,046 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:29,371 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 10:15:29,373 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:29,379 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 10:15:30,961 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 10:15:30,984 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 10:15:30,984 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 137 [2018-01-31 10:15:30,984 INFO L409 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-01-31 10:15:30,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-01-31 10:15:30,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3672, Invalid=14960, Unknown=0, NotChecked=0, Total=18632 [2018-01-31 10:15:30,986 INFO L87 Difference]: Start difference. First operand 339 states and 350 transitions. Second operand 137 states. [2018-01-31 10:15:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 10:15:34,146 INFO L93 Difference]: Finished difference Result 381 states and 396 transitions. [2018-01-31 10:15:34,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-01-31 10:15:34,147 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 300 [2018-01-31 10:15:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 10:15:34,148 INFO L225 Difference]: With dead ends: 381 [2018-01-31 10:15:34,148 INFO L226 Difference]: Without dead ends: 352 [2018-01-31 10:15:34,149 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12013 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10569, Invalid=30437, Unknown=0, NotChecked=0, Total=41006 [2018-01-31 10:15:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-01-31 10:15:34,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2018-01-31 10:15:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-01-31 10:15:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 358 transitions. [2018-01-31 10:15:34,153 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 358 transitions. Word has length 300 [2018-01-31 10:15:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 10:15:34,155 INFO L432 AbstractCegarLoop]: Abstraction has 347 states and 358 transitions. [2018-01-31 10:15:34,155 INFO L433 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-01-31 10:15:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 358 transitions. [2018-01-31 10:15:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-01-31 10:15:34,156 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 10:15:34,156 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 10:15:34,156 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-31 10:15:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1837891283, now seen corresponding path program 34 times [2018-01-31 10:15:34,157 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 10:15:34,157 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 10:15:34,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:34,157 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 10:15:34,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 10:15:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 10:15:34,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 10:15:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 10:15:36,217 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 10:15:36,217 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 10:15:36,221 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-31 10:15:36,662 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 10:15:36,666 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-01-31 10:15:36,698 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-31 10:15:36,698 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-31 10:15:36,700 WARN L185 ceAbstractionStarter]: Timeout [2018-01-31 10:15:36,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:15:36 BasicIcfg [2018-01-31 10:15:36,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 10:15:36,701 INFO L168 Benchmark]: Toolchain (without parser) took 152212.84 ms. Allocated memory was 149.9 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 114.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 327.4 MB. Max. memory is 5.3 GB. [2018-01-31 10:15:36,701 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 149.9 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 10:15:36,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.58 ms. Allocated memory is still 149.9 MB. Free memory was 114.3 MB in the beginning and 105.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. [2018-01-31 10:15:36,701 INFO L168 Benchmark]: Boogie Preprocessor took 19.33 ms. Allocated memory is still 149.9 MB. Free memory was 105.7 MB in the beginning and 103.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-31 10:15:36,702 INFO L168 Benchmark]: RCFGBuilder took 438.07 ms. Allocated memory is still 149.9 MB. Free memory was 103.9 MB in the beginning and 83.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 5.3 GB. [2018-01-31 10:15:36,702 INFO L168 Benchmark]: IcfgTransformer took 7360.72 ms. Allocated memory was 149.9 MB in the beginning and 884.5 MB in the end (delta: 734.5 MB). Free memory was 83.5 MB in the beginning and 697.9 MB in the end (delta: -614.3 MB). Peak memory consumption was 120.2 MB. Max. memory is 5.3 GB. [2018-01-31 10:15:36,702 INFO L168 Benchmark]: TraceAbstraction took 144279.51 ms. Allocated memory was 884.5 MB in the beginning and 1.8 GB in the end (delta: 950.5 MB). Free memory was 697.9 MB in the beginning and 1.5 GB in the end (delta: -774.6 MB). Peak memory consumption was 175.9 MB. Max. memory is 5.3 GB. [2018-01-31 10:15:36,703 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 149.9 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.58 ms. Allocated memory is still 149.9 MB. Free memory was 114.3 MB in the beginning and 105.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.33 ms. Allocated memory is still 149.9 MB. Free memory was 105.7 MB in the beginning and 103.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 438.07 ms. Allocated memory is still 149.9 MB. Free memory was 103.9 MB in the beginning and 83.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 5.3 GB. * IcfgTransformer took 7360.72 ms. Allocated memory was 149.9 MB in the beginning and 884.5 MB in the end (delta: 734.5 MB). Free memory was 83.5 MB in the beginning and 697.9 MB in the end (delta: -614.3 MB). Peak memory consumption was 120.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 144279.51 ms. Allocated memory was 884.5 MB in the beginning and 1.8 GB in the end (delta: 950.5 MB). Free memory was 697.9 MB in the beginning and 1.5 GB in the end (delta: -774.6 MB). Peak memory consumption was 175.9 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) : 0.306151 RENAME_VARIABLES(MILLISECONDS) : 0.197452 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.294157 PROJECTAWAY(MILLISECONDS) : 0.084875 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.046605 DISJOIN(MILLISECONDS) : 0.489075 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.210348 ADD_EQUALITY(MILLISECONDS) : 0.005181 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.002332 #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 TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. TIMEOUT Result, 144.1s OverallTime, 36 OverallIterations, 35 TraceHistogramMax, 44.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2856 SDtfs, 8684 SDslu, 37257 SDs, 0 SdLazy, 11511 SolverSat, 1805 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8059 GetRequests, 4558 SyntacticMatches, 34 SemanticMatches, 3467 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138413 ImplicationChecksByTransitivity, 80.6s 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, 43.9s SatisfiabilityAnalysisTime, 50.6s 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/rangesum40_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_10-15-36-717.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum40_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_10-15-36-717.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum40_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_10-15-36-717.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum40_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_10-15-36-717.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum40_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_10-15-36-717.csv Completed graceful shutdown