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/array-examples/data_structures_set_multi_proc_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 02:29:40,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 02:29:40,607 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 02:29:40,616 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 02:29:40,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 02:29:40,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 02:29:40,617 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 02:29:40,618 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 02:29:40,619 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 02:29:40,620 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 02:29:40,620 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 02:29:40,621 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 02:29:40,621 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 02:29:40,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 02:29:40,622 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 02:29:40,623 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 02:29:40,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 02:29:40,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 02:29:40,628 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 02:29:40,629 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 02:29:40,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 02:29:40,630 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 02:29:40,630 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 02:29:40,631 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 02:29:40,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 02:29:40,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 02:29:40,632 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 02:29:40,632 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 02:29:40,632 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-30 02:29:40,633 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 02:29:40,633 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 02:29:40,633 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 [2018-01-30 02:29:40,640 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 02:29:40,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 02:29:40,640 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 02:29:40,641 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 02:29:40,641 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 02:29:40,641 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 02:29:40,641 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 02:29:40,641 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 02:29:40,641 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 02:29:40,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 02:29:40,644 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 02:29:40,644 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 02:29:40,644 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 02:29:40,644 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 02:29:40,644 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 02:29:40,644 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 02:29:40,645 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:29:40,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 02:29:40,645 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 02:29:40,646 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 02:29:40,646 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 02:29:40,646 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 02:29:40,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 02:29:40,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 02:29:40,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 02:29:40,646 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 02:29:40,647 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 02:29:40,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 02:29:40,683 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 02:29:40,686 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 02:29:40,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 02:29:40,687 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 02:29:40,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_false-unreach-call_ground.i [2018-01-30 02:29:40,750 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 02:29:40,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 02:29:40,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 02:29:40,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 02:29:40,755 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 02:29:40,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1b5fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40, skipping insertion in model container [2018-01-30 02:29:40,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,766 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:29:40,775 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:29:40,850 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:29:40,863 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:29:40,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40 WrapperNode [2018-01-30 02:29:40,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 02:29:40,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 02:29:40,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 02:29:40,867 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 02:29:40,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (1/1) ... [2018-01-30 02:29:40,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 02:29:40,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 02:29:40,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 02:29:40,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 02:29:40,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (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 [2018-01-30 02:29:40,930 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 02:29:40,930 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 02:29:40,930 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 02:29:40,930 INFO L136 BoogieDeclarations]: Found implementation of procedure insert [2018-01-30 02:29:40,930 INFO L136 BoogieDeclarations]: Found implementation of procedure elem_exists [2018-01-30 02:29:40,931 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure insert [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure elem_exists [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 02:29:40,931 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 02:29:41,300 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 02:29:41,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:29:41 BoogieIcfgContainer [2018-01-30 02:29:41,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 02:29:41,301 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 02:29:41,301 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 02:29:41,302 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 02:29:41,306 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:29:41" (1/1) ... [2018-01-30 02:29:41,312 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-30 02:29:41,312 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-30 02:29:41,312 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-30 02:29:41,337 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 5 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-30 02:29:41,350 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-30 02:29:41,386 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-30 02:29:51,110 INFO L311 AbstractInterpreter]: Visited 120 different actions 981 times. Merged at 79 different actions 472 times. Widened at 6 different actions 7 times. Found 100 fixpoints after 20 different actions. Largest state had 44 variables. [2018-01-30 02:29:51,112 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-30 02:29:51,117 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 6 [2018-01-30 02:29:51,118 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-30 02:29:51,118 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-30 02:29:51,118 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select (select |v_#memory_int_8| |v_main_~#set~7.base_6|) (+ |v_main_~#set~7.offset_6| (* 4 v_main_~x~7_9))), at (SUMMARY for call #t~mem5 := read~int(~#set~7.base, ~#set~7.offset + ~x~7 * 4, 4); srcloc: L21)) ((select (select |v_#memory_int_6| |v_main_~#set~7.base_1|) (+ (* 4 v_main_~x~7_1) |v_main_~#set~7.offset_1|)), at (SUMMARY for call #t~mem12 := read~int(~#set~7.base, ~#set~7.offset + ~x~7 * 4, 4); srcloc: L33)) ((select (select |v_#memory_int_9| |v_main_~#set~7.base_7|) (+ (* 4 v_main_~y~7_10) |v_main_~#set~7.offset_7|)), at (SUMMARY for call #t~mem6 := read~int(~#set~7.base, ~#set~7.offset + ~y~7 * 4, 4); srcloc: L21')) ((select (select |v_#memory_int_7| |v_main_~#set~7.base_2|) (+ (* 4 v_main_~y~7_3) |v_main_~#set~7.offset_2|)), at (SUMMARY for call #t~mem13 := read~int(~#set~7.base, ~#set~7.offset + ~y~7 * 4, 4); srcloc: L33')) ((select |v_#memory_int_3| v_insert_~set.base_2), at (SUMMARY for call write~int(~value, ~set.base, ~set.offset + ~size * 4, 4); srcloc: L4)) ((select (select |v_#memory_int_1| v_elem_exists_~set.base_2) (+ v_elem_exists_~set.offset_2 (* 4 v_elem_exists_~i~5_5))), at (SUMMARY for call #t~mem2 := read~int(~set.base, ~set.offset + ~i~5 * 4, 4); srcloc: L10)) [2018-01-30 02:29:51,123 INFO L547 PartitionManager]: partitioning result: [2018-01-30 02:29:51,123 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-30 02:29:51,123 INFO L561 PartitionManager]: at dimension 0 [2018-01-30 02:29:51,123 INFO L562 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-30 02:29:51,123 INFO L563 PartitionManager]: # location blocks :1 [2018-01-30 02:29:51,123 INFO L561 PartitionManager]: at dimension 1 [2018-01-30 02:29:51,123 INFO L562 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-30 02:29:51,124 INFO L563 PartitionManager]: # location blocks :1 [2018-01-30 02:29:51,124 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-30 02:29:51,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:29:51 BasicIcfg [2018-01-30 02:29:51,147 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 02:29:51,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 02:29:51,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 02:29:51,149 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 02:29:51,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:29:40" (1/4) ... [2018-01-30 02:29:51,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2492f294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:29:51, skipping insertion in model container [2018-01-30 02:29:51,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:29:40" (2/4) ... [2018-01-30 02:29:51,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2492f294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:29:51, skipping insertion in model container [2018-01-30 02:29:51,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:29:41" (3/4) ... [2018-01-30 02:29:51,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2492f294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:29:51, skipping insertion in model container [2018-01-30 02:29:51,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:29:51" (4/4) ... [2018-01-30 02:29:51,151 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-30 02:29:51,157 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 02:29:51,161 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 02:29:51,248 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 02:29:51,249 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 02:29:51,249 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 02:29:51,249 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 02:29:51,249 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 02:29:51,249 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 02:29:51,249 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 02:29:51,249 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 02:29:51,249 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 02:29:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2018-01-30 02:29:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-30 02:29:51,261 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:51,261 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:29:51,261 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:51,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1970752859, now seen corresponding path program 1 times [2018-01-30 02:29:51,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:51,266 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:51,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:51,295 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:51,295 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:51,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:51,459 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:29:51,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-30 02:29:51,460 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 02:29:51,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 02:29:51,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 02:29:51,466 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2018-01-30 02:29:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:51,561 INFO L93 Difference]: Finished difference Result 194 states and 241 transitions. [2018-01-30 02:29:51,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 02:29:51,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-30 02:29:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:51,567 INFO L225 Difference]: With dead ends: 194 [2018-01-30 02:29:51,568 INFO L226 Difference]: Without dead ends: 91 [2018-01-30 02:29:51,569 INFO L553 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 [2018-01-30 02:29:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-30 02:29:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-01-30 02:29:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-01-30 02:29:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2018-01-30 02:29:51,594 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 18 [2018-01-30 02:29:51,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:51,594 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2018-01-30 02:29:51,595 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 02:29:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2018-01-30 02:29:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-30 02:29:51,596 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:51,596 INFO L350 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] [2018-01-30 02:29:51,596 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1134299536, now seen corresponding path program 1 times [2018-01-30 02:29:51,597 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:51,597 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:51,597 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:51,597 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:51,597 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:51,604 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:51,682 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:51,682 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:29:51,694 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:51,721 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:51,833 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:51,833 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-01-30 02:29:51,834 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 02:29:51,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 02:29:51,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:29:51,834 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 7 states. [2018-01-30 02:29:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:51,974 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2018-01-30 02:29:51,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:29:51,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-01-30 02:29:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:51,975 INFO L225 Difference]: With dead ends: 148 [2018-01-30 02:29:51,976 INFO L226 Difference]: Without dead ends: 125 [2018-01-30 02:29:51,976 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:29:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-30 02:29:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 102. [2018-01-30 02:29:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-01-30 02:29:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2018-01-30 02:29:51,982 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 39 [2018-01-30 02:29:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:51,982 INFO L432 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2018-01-30 02:29:51,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 02:29:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2018-01-30 02:29:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-30 02:29:51,983 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:51,983 INFO L350 BasicCegarLoop]: trace histogram [3, 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] [2018-01-30 02:29:51,983 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:51,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2335283, now seen corresponding path program 1 times [2018-01-30 02:29:51,983 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:51,984 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:51,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:51,984 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:51,984 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:51,992 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:52,116 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:52,116 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 [2018-01-30 02:29:52,126 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:52,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:52,181 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:52,181 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 02:29:52,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:29:52,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:29:52,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:29:52,182 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 9 states. [2018-01-30 02:29:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:52,346 INFO L93 Difference]: Finished difference Result 171 states and 209 transitions. [2018-01-30 02:29:52,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 02:29:52,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-01-30 02:29:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:52,349 INFO L225 Difference]: With dead ends: 171 [2018-01-30 02:29:52,349 INFO L226 Difference]: Without dead ends: 148 [2018-01-30 02:29:52,350 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:29:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-30 02:29:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2018-01-30 02:29:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 02:29:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2018-01-30 02:29:52,356 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 48 [2018-01-30 02:29:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:52,356 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2018-01-30 02:29:52,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:29:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2018-01-30 02:29:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-30 02:29:52,357 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:52,357 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 02:29:52,357 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1855319824, now seen corresponding path program 2 times [2018-01-30 02:29:52,357 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:52,357 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:52,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:52,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:52,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:52,367 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:52,659 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:52,659 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 [2018-01-30 02:29:52,663 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:29:52,670 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:52,684 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:52,692 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:52,693 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:52,880 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:52,880 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-01-30 02:29:52,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 02:29:52,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 02:29:52,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:29:52,881 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand 11 states. [2018-01-30 02:29:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:53,078 INFO L93 Difference]: Finished difference Result 194 states and 240 transitions. [2018-01-30 02:29:53,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 02:29:53,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2018-01-30 02:29:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:53,079 INFO L225 Difference]: With dead ends: 194 [2018-01-30 02:29:53,080 INFO L226 Difference]: Without dead ends: 171 [2018-01-30 02:29:53,080 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:29:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-30 02:29:53,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 148. [2018-01-30 02:29:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-30 02:29:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 182 transitions. [2018-01-30 02:29:53,088 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 182 transitions. Word has length 57 [2018-01-30 02:29:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:53,088 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 182 transitions. [2018-01-30 02:29:53,088 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 02:29:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 182 transitions. [2018-01-30 02:29:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-30 02:29:53,090 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:53,090 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2018-01-30 02:29:53,090 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash -138942765, now seen corresponding path program 3 times [2018-01-30 02:29:53,090 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:53,090 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:53,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:53,091 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:53,091 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:53,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:53,395 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:53,395 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 [2018-01-30 02:29:53,400 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:29:53,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:53,411 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:53,412 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:53,419 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:53,421 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:53,422 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:53,423 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:53,456 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:53,456 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-30 02:29:53,457 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 02:29:53,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 02:29:53,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:29:53,457 INFO L87 Difference]: Start difference. First operand 148 states and 182 transitions. Second operand 13 states. [2018-01-30 02:29:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:53,679 INFO L93 Difference]: Finished difference Result 217 states and 271 transitions. [2018-01-30 02:29:53,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 02:29:53,680 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2018-01-30 02:29:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:53,681 INFO L225 Difference]: With dead ends: 217 [2018-01-30 02:29:53,681 INFO L226 Difference]: Without dead ends: 194 [2018-01-30 02:29:53,681 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:29:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-30 02:29:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 171. [2018-01-30 02:29:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-01-30 02:29:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2018-01-30 02:29:53,693 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 66 [2018-01-30 02:29:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:53,693 INFO L432 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2018-01-30 02:29:53,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 02:29:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2018-01-30 02:29:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-01-30 02:29:53,694 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:53,694 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 02:29:53,694 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 273219664, now seen corresponding path program 4 times [2018-01-30 02:29:53,695 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:53,695 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:53,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:53,695 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:53,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:53,709 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:53,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:53,838 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 [2018-01-30 02:29:53,843 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:29:53,856 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:53,858 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:53,893 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:53,893 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-30 02:29:53,893 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:29:53,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:29:53,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:29:53,894 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand 15 states. [2018-01-30 02:29:54,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:54,107 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2018-01-30 02:29:54,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:29:54,107 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2018-01-30 02:29:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:54,108 INFO L225 Difference]: With dead ends: 240 [2018-01-30 02:29:54,108 INFO L226 Difference]: Without dead ends: 217 [2018-01-30 02:29:54,108 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:29:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-30 02:29:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 194. [2018-01-30 02:29:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-30 02:29:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 244 transitions. [2018-01-30 02:29:54,115 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 244 transitions. Word has length 75 [2018-01-30 02:29:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:54,116 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 244 transitions. [2018-01-30 02:29:54,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:29:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 244 transitions. [2018-01-30 02:29:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-30 02:29:54,117 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:54,117 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 02:29:54,117 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:54,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2126529395, now seen corresponding path program 5 times [2018-01-30 02:29:54,117 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:54,117 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:54,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:54,118 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:54,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:54,125 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:54,237 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:54,237 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 [2018-01-30 02:29:54,241 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:29:54,246 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,259 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,272 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,273 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,274 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,275 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,278 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:54,279 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:54,280 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:54,322 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:54,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-30 02:29:54,323 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:29:54,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:29:54,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:29:54,323 INFO L87 Difference]: Start difference. First operand 194 states and 244 transitions. Second operand 17 states. [2018-01-30 02:29:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:54,497 INFO L93 Difference]: Finished difference Result 263 states and 333 transitions. [2018-01-30 02:29:54,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 02:29:54,498 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2018-01-30 02:29:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:54,498 INFO L225 Difference]: With dead ends: 263 [2018-01-30 02:29:54,499 INFO L226 Difference]: Without dead ends: 240 [2018-01-30 02:29:54,499 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:29:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-30 02:29:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2018-01-30 02:29:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-30 02:29:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2018-01-30 02:29:54,506 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 84 [2018-01-30 02:29:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:54,506 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2018-01-30 02:29:54,506 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:29:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2018-01-30 02:29:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-01-30 02:29:54,507 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:54,507 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2018-01-30 02:29:54,507 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:54,507 INFO L82 PathProgramCache]: Analyzing trace with hash 80664496, now seen corresponding path program 6 times [2018-01-30 02:29:54,507 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:54,507 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:54,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:54,508 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:54,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:54,514 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:54,642 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:54,642 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 [2018-01-30 02:29:54,648 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:29:54,663 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,686 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,706 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,716 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,717 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,718 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:54,719 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:54,720 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:54,761 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:54,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 02:29:54,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 02:29:54,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 02:29:54,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:29:54,762 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand 19 states. [2018-01-30 02:29:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:55,040 INFO L93 Difference]: Finished difference Result 286 states and 364 transitions. [2018-01-30 02:29:55,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 02:29:55,040 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2018-01-30 02:29:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:55,041 INFO L225 Difference]: With dead ends: 286 [2018-01-30 02:29:55,041 INFO L226 Difference]: Without dead ends: 263 [2018-01-30 02:29:55,042 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:29:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-01-30 02:29:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 240. [2018-01-30 02:29:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-30 02:29:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 306 transitions. [2018-01-30 02:29:55,049 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 306 transitions. Word has length 93 [2018-01-30 02:29:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:55,049 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 306 transitions. [2018-01-30 02:29:55,049 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 02:29:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 306 transitions. [2018-01-30 02:29:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-01-30 02:29:55,050 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:55,050 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2018-01-30 02:29:55,050 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash 426162195, now seen corresponding path program 7 times [2018-01-30 02:29:55,050 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:55,050 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:55,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:55,051 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:55,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:55,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:55,208 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:55,209 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 [2018-01-30 02:29:55,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:55,227 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:55,272 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:55,272 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 02:29:55,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 02:29:55,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 02:29:55,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:29:55,272 INFO L87 Difference]: Start difference. First operand 240 states and 306 transitions. Second operand 21 states. [2018-01-30 02:29:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:55,688 INFO L93 Difference]: Finished difference Result 309 states and 395 transitions. [2018-01-30 02:29:55,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 02:29:55,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 102 [2018-01-30 02:29:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:55,690 INFO L225 Difference]: With dead ends: 309 [2018-01-30 02:29:55,690 INFO L226 Difference]: Without dead ends: 286 [2018-01-30 02:29:55,691 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 02:29:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-30 02:29:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 263. [2018-01-30 02:29:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-01-30 02:29:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 337 transitions. [2018-01-30 02:29:55,703 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 337 transitions. Word has length 102 [2018-01-30 02:29:55,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:55,703 INFO L432 AbstractCegarLoop]: Abstraction has 263 states and 337 transitions. [2018-01-30 02:29:55,703 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 02:29:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 337 transitions. [2018-01-30 02:29:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-01-30 02:29:55,704 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:55,705 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2018-01-30 02:29:55,705 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash -99510512, now seen corresponding path program 8 times [2018-01-30 02:29:55,705 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:55,705 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:55,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:55,707 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:29:55,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:55,714 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:55,902 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:55,902 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 [2018-01-30 02:29:55,906 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:29:55,914 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:55,920 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:55,921 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:55,922 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:55,989 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:55,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-30 02:29:55,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 02:29:55,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 02:29:55,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:29:55,990 INFO L87 Difference]: Start difference. First operand 263 states and 337 transitions. Second operand 23 states. [2018-01-30 02:29:56,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:56,305 INFO L93 Difference]: Finished difference Result 332 states and 426 transitions. [2018-01-30 02:29:56,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 02:29:56,319 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 111 [2018-01-30 02:29:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:56,320 INFO L225 Difference]: With dead ends: 332 [2018-01-30 02:29:56,320 INFO L226 Difference]: Without dead ends: 309 [2018-01-30 02:29:56,321 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 02:29:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-01-30 02:29:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 286. [2018-01-30 02:29:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-01-30 02:29:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 368 transitions. [2018-01-30 02:29:56,330 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 368 transitions. Word has length 111 [2018-01-30 02:29:56,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:56,330 INFO L432 AbstractCegarLoop]: Abstraction has 286 states and 368 transitions. [2018-01-30 02:29:56,330 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 02:29:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 368 transitions. [2018-01-30 02:29:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-30 02:29:56,331 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:56,331 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 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] [2018-01-30 02:29:56,331 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1431651507, now seen corresponding path program 9 times [2018-01-30 02:29:56,331 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:56,331 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:56,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:56,333 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:56,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:56,345 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:56,788 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:56,788 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 [2018-01-30 02:29:56,794 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:29:56,799 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,801 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,802 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,803 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,804 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,805 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,806 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,809 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,810 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,811 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:29:56,811 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:56,813 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:56,950 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:56,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-01-30 02:29:56,951 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 02:29:56,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 02:29:56,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:29:56,951 INFO L87 Difference]: Start difference. First operand 286 states and 368 transitions. Second operand 25 states. [2018-01-30 02:29:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:57,343 INFO L93 Difference]: Finished difference Result 355 states and 457 transitions. [2018-01-30 02:29:57,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 02:29:57,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 120 [2018-01-30 02:29:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:57,345 INFO L225 Difference]: With dead ends: 355 [2018-01-30 02:29:57,345 INFO L226 Difference]: Without dead ends: 332 [2018-01-30 02:29:57,345 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 02:29:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-30 02:29:57,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 309. [2018-01-30 02:29:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-01-30 02:29:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 399 transitions. [2018-01-30 02:29:57,353 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 399 transitions. Word has length 120 [2018-01-30 02:29:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:57,353 INFO L432 AbstractCegarLoop]: Abstraction has 309 states and 399 transitions. [2018-01-30 02:29:57,354 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 02:29:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 399 transitions. [2018-01-30 02:29:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-01-30 02:29:57,355 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:57,355 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2018-01-30 02:29:57,355 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash 564608624, now seen corresponding path program 10 times [2018-01-30 02:29:57,355 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:57,355 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:57,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:57,356 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:57,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:57,362 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:57,859 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:57,859 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 [2018-01-30 02:29:57,865 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:29:57,890 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:57,891 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:57,932 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:57,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-01-30 02:29:57,933 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 02:29:57,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 02:29:57,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:29:57,933 INFO L87 Difference]: Start difference. First operand 309 states and 399 transitions. Second operand 27 states. [2018-01-30 02:29:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:58,258 INFO L93 Difference]: Finished difference Result 378 states and 488 transitions. [2018-01-30 02:29:58,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 02:29:58,259 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 129 [2018-01-30 02:29:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:58,260 INFO L225 Difference]: With dead ends: 378 [2018-01-30 02:29:58,260 INFO L226 Difference]: Without dead ends: 355 [2018-01-30 02:29:58,261 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:29:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-01-30 02:29:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 332. [2018-01-30 02:29:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-01-30 02:29:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 430 transitions. [2018-01-30 02:29:58,268 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 430 transitions. Word has length 129 [2018-01-30 02:29:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:58,269 INFO L432 AbstractCegarLoop]: Abstraction has 332 states and 430 transitions. [2018-01-30 02:29:58,269 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 02:29:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 430 transitions. [2018-01-30 02:29:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-01-30 02:29:58,270 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:58,270 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 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] [2018-01-30 02:29:58,270 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:58,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1773529427, now seen corresponding path program 11 times [2018-01-30 02:29:58,270 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:58,270 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:58,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:58,271 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:58,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:58,277 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:58,508 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:58,508 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 [2018-01-30 02:29:58,513 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:29:58,517 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,518 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,519 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,520 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,525 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,526 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,527 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,529 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,530 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,531 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,533 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:29:58,534 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:58,536 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:58,577 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:58,577 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-01-30 02:29:58,577 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 02:29:58,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 02:29:58,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:29:58,578 INFO L87 Difference]: Start difference. First operand 332 states and 430 transitions. Second operand 29 states. [2018-01-30 02:29:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:29:59,416 INFO L93 Difference]: Finished difference Result 401 states and 519 transitions. [2018-01-30 02:29:59,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 02:29:59,416 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 138 [2018-01-30 02:29:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:29:59,418 INFO L225 Difference]: With dead ends: 401 [2018-01-30 02:29:59,418 INFO L226 Difference]: Without dead ends: 378 [2018-01-30 02:29:59,418 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 02:29:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-01-30 02:29:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 355. [2018-01-30 02:29:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-01-30 02:29:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 461 transitions. [2018-01-30 02:29:59,427 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 461 transitions. Word has length 138 [2018-01-30 02:29:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:29:59,428 INFO L432 AbstractCegarLoop]: Abstraction has 355 states and 461 transitions. [2018-01-30 02:29:59,428 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 02:29:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 461 transitions. [2018-01-30 02:29:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-01-30 02:29:59,429 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:29:59,429 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 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] [2018-01-30 02:29:59,429 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:29:59,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1280979504, now seen corresponding path program 12 times [2018-01-30 02:29:59,429 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:29:59,429 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:29:59,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:59,430 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:29:59,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:29:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:29:59,435 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:29:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:59,684 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:29:59,684 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 [2018-01-30 02:29:59,690 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:29:59,696 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,698 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,700 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,703 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,704 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,706 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,708 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,711 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,712 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:29:59,712 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:29:59,714 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:29:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:29:59,764 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:29:59,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-01-30 02:29:59,764 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 02:29:59,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 02:29:59,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:29:59,765 INFO L87 Difference]: Start difference. First operand 355 states and 461 transitions. Second operand 31 states. [2018-01-30 02:30:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:00,670 INFO L93 Difference]: Finished difference Result 424 states and 550 transitions. [2018-01-30 02:30:00,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 02:30:00,670 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 147 [2018-01-30 02:30:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:00,672 INFO L225 Difference]: With dead ends: 424 [2018-01-30 02:30:00,672 INFO L226 Difference]: Without dead ends: 401 [2018-01-30 02:30:00,673 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 02:30:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-01-30 02:30:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 378. [2018-01-30 02:30:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-01-30 02:30:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 492 transitions. [2018-01-30 02:30:00,682 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 492 transitions. Word has length 147 [2018-01-30 02:30:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:00,682 INFO L432 AbstractCegarLoop]: Abstraction has 378 states and 492 transitions. [2018-01-30 02:30:00,682 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 02:30:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 492 transitions. [2018-01-30 02:30:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-01-30 02:30:00,683 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:00,684 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2018-01-30 02:30:00,684 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:00,684 INFO L82 PathProgramCache]: Analyzing trace with hash -684546573, now seen corresponding path program 13 times [2018-01-30 02:30:00,684 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:00,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:00,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:00,684 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:00,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:00,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 0 proven. 834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:00,986 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:00,986 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 [2018-01-30 02:30:00,991 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:30:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:01,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 0 proven. 834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:01,105 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:01,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-01-30 02:30:01,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 02:30:01,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 02:30:01,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:30:01,106 INFO L87 Difference]: Start difference. First operand 378 states and 492 transitions. Second operand 33 states. [2018-01-30 02:30:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:01,874 INFO L93 Difference]: Finished difference Result 447 states and 581 transitions. [2018-01-30 02:30:01,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 02:30:01,874 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 156 [2018-01-30 02:30:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:01,876 INFO L225 Difference]: With dead ends: 447 [2018-01-30 02:30:01,876 INFO L226 Difference]: Without dead ends: 424 [2018-01-30 02:30:01,877 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 02:30:01,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-01-30 02:30:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 401. [2018-01-30 02:30:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-01-30 02:30:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 523 transitions. [2018-01-30 02:30:01,888 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 523 transitions. Word has length 156 [2018-01-30 02:30:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:01,888 INFO L432 AbstractCegarLoop]: Abstraction has 401 states and 523 transitions. [2018-01-30 02:30:01,889 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 02:30:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 523 transitions. [2018-01-30 02:30:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-01-30 02:30:01,891 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:01,891 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 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] [2018-01-30 02:30:01,891 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:01,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1319322928, now seen corresponding path program 14 times [2018-01-30 02:30:01,891 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:01,891 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:01,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:01,892 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:30:01,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:01,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:02,373 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:02,373 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 [2018-01-30 02:30:02,378 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:30:02,384 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:02,392 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:02,394 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:02,395 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:02,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:02,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-01-30 02:30:02,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 02:30:02,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 02:30:02,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:30:02,444 INFO L87 Difference]: Start difference. First operand 401 states and 523 transitions. Second operand 35 states. [2018-01-30 02:30:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:02,990 INFO L93 Difference]: Finished difference Result 470 states and 612 transitions. [2018-01-30 02:30:02,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-30 02:30:02,990 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 165 [2018-01-30 02:30:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:02,991 INFO L225 Difference]: With dead ends: 470 [2018-01-30 02:30:02,991 INFO L226 Difference]: Without dead ends: 447 [2018-01-30 02:30:02,992 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2018-01-30 02:30:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-01-30 02:30:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 424. [2018-01-30 02:30:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-01-30 02:30:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 554 transitions. [2018-01-30 02:30:03,002 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 554 transitions. Word has length 165 [2018-01-30 02:30:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:03,003 INFO L432 AbstractCegarLoop]: Abstraction has 424 states and 554 transitions. [2018-01-30 02:30:03,003 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 02:30:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 554 transitions. [2018-01-30 02:30:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-30 02:30:03,004 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:03,004 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2018-01-30 02:30:03,004 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash 133528211, now seen corresponding path program 15 times [2018-01-30 02:30:03,005 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:03,005 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:03,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:03,005 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:03,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:03,011 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 0 proven. 1097 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:03,361 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:03,361 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 [2018-01-30 02:30:03,366 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:30:03,372 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,374 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,375 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,376 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,377 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,379 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,380 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,381 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,382 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,383 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,386 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,387 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,389 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,391 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,392 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:03,392 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:03,394 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 0 proven. 1097 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:03,444 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:03,444 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-01-30 02:30:03,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 02:30:03,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 02:30:03,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 02:30:03,445 INFO L87 Difference]: Start difference. First operand 424 states and 554 transitions. Second operand 37 states. [2018-01-30 02:30:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:03,975 INFO L93 Difference]: Finished difference Result 493 states and 643 transitions. [2018-01-30 02:30:03,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-30 02:30:03,976 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 174 [2018-01-30 02:30:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:03,977 INFO L225 Difference]: With dead ends: 493 [2018-01-30 02:30:03,977 INFO L226 Difference]: Without dead ends: 470 [2018-01-30 02:30:03,978 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2018-01-30 02:30:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2018-01-30 02:30:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 447. [2018-01-30 02:30:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-01-30 02:30:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 585 transitions. [2018-01-30 02:30:03,989 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 585 transitions. Word has length 174 [2018-01-30 02:30:03,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:03,989 INFO L432 AbstractCegarLoop]: Abstraction has 447 states and 585 transitions. [2018-01-30 02:30:03,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 02:30:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 585 transitions. [2018-01-30 02:30:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-01-30 02:30:03,991 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:03,991 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2018-01-30 02:30:03,991 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1471521936, now seen corresponding path program 16 times [2018-01-30 02:30:03,991 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:03,991 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:03,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:03,991 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:03,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:03,998 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 1242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:04,530 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:04,531 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 [2018-01-30 02:30:04,535 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:30:04,553 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:04,555 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 1242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:04,603 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:04,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-01-30 02:30:04,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 02:30:04,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 02:30:04,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:30:04,604 INFO L87 Difference]: Start difference. First operand 447 states and 585 transitions. Second operand 39 states. [2018-01-30 02:30:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:05,575 INFO L93 Difference]: Finished difference Result 516 states and 674 transitions. [2018-01-30 02:30:05,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-30 02:30:05,575 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 183 [2018-01-30 02:30:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:05,576 INFO L225 Difference]: With dead ends: 516 [2018-01-30 02:30:05,577 INFO L226 Difference]: Without dead ends: 493 [2018-01-30 02:30:05,578 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-01-30 02:30:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-01-30 02:30:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 470. [2018-01-30 02:30:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2018-01-30 02:30:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 616 transitions. [2018-01-30 02:30:05,589 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 616 transitions. Word has length 183 [2018-01-30 02:30:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:05,590 INFO L432 AbstractCegarLoop]: Abstraction has 470 states and 616 transitions. [2018-01-30 02:30:05,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 02:30:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 616 transitions. [2018-01-30 02:30:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-30 02:30:05,591 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:05,591 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 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] [2018-01-30 02:30:05,591 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash -274176205, now seen corresponding path program 17 times [2018-01-30 02:30:05,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:05,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:05,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:05,594 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:05,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:05,602 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:06,359 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:06,359 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-30 02:30:06,364 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:30:06,369 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,370 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,372 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,374 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,379 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,380 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,383 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,384 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,385 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,386 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,390 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:06,390 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:06,393 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:06,445 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:06,445 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2018-01-30 02:30:06,446 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 02:30:06,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 02:30:06,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 02:30:06,446 INFO L87 Difference]: Start difference. First operand 470 states and 616 transitions. Second operand 41 states. [2018-01-30 02:30:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:07,133 INFO L93 Difference]: Finished difference Result 539 states and 705 transitions. [2018-01-30 02:30:07,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-30 02:30:07,133 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 192 [2018-01-30 02:30:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:07,135 INFO L225 Difference]: With dead ends: 539 [2018-01-30 02:30:07,135 INFO L226 Difference]: Without dead ends: 516 [2018-01-30 02:30:07,137 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2018-01-30 02:30:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-01-30 02:30:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 493. [2018-01-30 02:30:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-01-30 02:30:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 647 transitions. [2018-01-30 02:30:07,151 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 647 transitions. Word has length 192 [2018-01-30 02:30:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:07,151 INFO L432 AbstractCegarLoop]: Abstraction has 493 states and 647 transitions. [2018-01-30 02:30:07,151 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 02:30:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 647 transitions. [2018-01-30 02:30:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-01-30 02:30:07,153 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:07,153 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2018-01-30 02:30:07,153 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1517480944, now seen corresponding path program 18 times [2018-01-30 02:30:07,154 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:07,154 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:07,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:07,154 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:07,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:07,161 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 1559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:09,652 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:09,652 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 [2018-01-30 02:30:09,657 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:30:09,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,666 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,667 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,668 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,669 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,670 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,672 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,677 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,700 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,703 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,704 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,706 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,707 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:09,708 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:09,710 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 1559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:09,763 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:09,763 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-01-30 02:30:09,764 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-30 02:30:09,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-30 02:30:09,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 02:30:09,764 INFO L87 Difference]: Start difference. First operand 493 states and 647 transitions. Second operand 43 states. [2018-01-30 02:30:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:10,747 INFO L93 Difference]: Finished difference Result 562 states and 736 transitions. [2018-01-30 02:30:10,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-30 02:30:10,748 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 201 [2018-01-30 02:30:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:10,750 INFO L225 Difference]: With dead ends: 562 [2018-01-30 02:30:10,750 INFO L226 Difference]: Without dead ends: 539 [2018-01-30 02:30:10,751 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 02:30:10,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2018-01-30 02:30:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 516. [2018-01-30 02:30:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-01-30 02:30:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 678 transitions. [2018-01-30 02:30:10,790 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 678 transitions. Word has length 201 [2018-01-30 02:30:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:10,790 INFO L432 AbstractCegarLoop]: Abstraction has 516 states and 678 transitions. [2018-01-30 02:30:10,790 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-30 02:30:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 678 transitions. [2018-01-30 02:30:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-01-30 02:30:10,791 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:10,791 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 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] [2018-01-30 02:30:10,791 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:10,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1418368045, now seen corresponding path program 19 times [2018-01-30 02:30:10,792 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:10,792 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:10,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:10,793 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:10,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:10,813 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 0 proven. 1731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:11,355 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:11,355 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 [2018-01-30 02:30:11,360 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:30:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:11,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 0 proven. 1731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:11,436 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:11,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-01-30 02:30:11,436 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 02:30:11,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 02:30:11,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 02:30:11,437 INFO L87 Difference]: Start difference. First operand 516 states and 678 transitions. Second operand 45 states. [2018-01-30 02:30:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:12,154 INFO L93 Difference]: Finished difference Result 585 states and 767 transitions. [2018-01-30 02:30:12,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-30 02:30:12,155 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 210 [2018-01-30 02:30:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:12,157 INFO L225 Difference]: With dead ends: 585 [2018-01-30 02:30:12,157 INFO L226 Difference]: Without dead ends: 562 [2018-01-30 02:30:12,157 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2018-01-30 02:30:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2018-01-30 02:30:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 539. [2018-01-30 02:30:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-01-30 02:30:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 709 transitions. [2018-01-30 02:30:12,171 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 709 transitions. Word has length 210 [2018-01-30 02:30:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:12,171 INFO L432 AbstractCegarLoop]: Abstraction has 539 states and 709 transitions. [2018-01-30 02:30:12,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-30 02:30:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 709 transitions. [2018-01-30 02:30:12,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-01-30 02:30:12,173 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:12,173 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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] [2018-01-30 02:30:12,173 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:12,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1760631632, now seen corresponding path program 20 times [2018-01-30 02:30:12,173 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:12,173 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:12,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:12,173 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:30:12,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:12,180 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:12,889 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:12,889 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 [2018-01-30 02:30:12,893 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:30:12,902 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:12,923 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:12,925 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:12,927 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:12,991 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:12,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2018-01-30 02:30:12,991 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-30 02:30:12,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-30 02:30:12,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 02:30:12,992 INFO L87 Difference]: Start difference. First operand 539 states and 709 transitions. Second operand 47 states. [2018-01-30 02:30:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:13,801 INFO L93 Difference]: Finished difference Result 608 states and 798 transitions. [2018-01-30 02:30:13,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-30 02:30:13,803 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 219 [2018-01-30 02:30:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:13,805 INFO L225 Difference]: With dead ends: 608 [2018-01-30 02:30:13,805 INFO L226 Difference]: Without dead ends: 585 [2018-01-30 02:30:13,806 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2018-01-30 02:30:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2018-01-30 02:30:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 562. [2018-01-30 02:30:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2018-01-30 02:30:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 740 transitions. [2018-01-30 02:30:13,821 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 740 transitions. Word has length 219 [2018-01-30 02:30:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:13,821 INFO L432 AbstractCegarLoop]: Abstraction has 562 states and 740 transitions. [2018-01-30 02:30:13,821 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-30 02:30:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 740 transitions. [2018-01-30 02:30:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-01-30 02:30:13,822 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:13,822 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 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] [2018-01-30 02:30:13,822 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash 570853491, now seen corresponding path program 21 times [2018-01-30 02:30:13,823 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:13,823 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:13,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:13,823 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:13,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:13,830 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 2102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:14,811 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:14,811 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-30 02:30:14,815 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:30:14,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,830 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,831 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,832 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,834 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,835 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,837 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,838 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,839 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,841 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,842 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,844 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,846 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,847 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,849 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,850 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,851 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,853 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:14,860 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:14,862 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 2102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:14,972 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:14,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-01-30 02:30:14,972 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-30 02:30:14,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-30 02:30:14,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:30:14,973 INFO L87 Difference]: Start difference. First operand 562 states and 740 transitions. Second operand 49 states. [2018-01-30 02:30:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:17,027 INFO L93 Difference]: Finished difference Result 631 states and 829 transitions. [2018-01-30 02:30:17,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-30 02:30:17,027 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 228 [2018-01-30 02:30:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:17,029 INFO L225 Difference]: With dead ends: 631 [2018-01-30 02:30:17,029 INFO L226 Difference]: Without dead ends: 608 [2018-01-30 02:30:17,030 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2018-01-30 02:30:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2018-01-30 02:30:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 585. [2018-01-30 02:30:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2018-01-30 02:30:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 771 transitions. [2018-01-30 02:30:17,046 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 771 transitions. Word has length 228 [2018-01-30 02:30:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:17,046 INFO L432 AbstractCegarLoop]: Abstraction has 585 states and 771 transitions. [2018-01-30 02:30:17,047 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-30 02:30:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 771 transitions. [2018-01-30 02:30:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-01-30 02:30:17,048 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:17,048 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 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] [2018-01-30 02:30:17,048 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2076586672, now seen corresponding path program 22 times [2018-01-30 02:30:17,048 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:17,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:17,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:17,049 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:17,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:17,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:17,914 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:17,914 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 [2018-01-30 02:30:17,930 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:30:17,951 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:17,953 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:18,043 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:18,043 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2018-01-30 02:30:18,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-30 02:30:18,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-30 02:30:18,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 02:30:18,044 INFO L87 Difference]: Start difference. First operand 585 states and 771 transitions. Second operand 51 states. [2018-01-30 02:30:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:19,018 INFO L93 Difference]: Finished difference Result 654 states and 860 transitions. [2018-01-30 02:30:19,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-30 02:30:19,018 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 237 [2018-01-30 02:30:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:19,020 INFO L225 Difference]: With dead ends: 654 [2018-01-30 02:30:19,020 INFO L226 Difference]: Without dead ends: 631 [2018-01-30 02:30:19,021 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2018-01-30 02:30:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2018-01-30 02:30:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 608. [2018-01-30 02:30:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2018-01-30 02:30:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 802 transitions. [2018-01-30 02:30:19,040 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 802 transitions. Word has length 237 [2018-01-30 02:30:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:19,040 INFO L432 AbstractCegarLoop]: Abstraction has 608 states and 802 transitions. [2018-01-30 02:30:19,040 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-30 02:30:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 802 transitions. [2018-01-30 02:30:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-01-30 02:30:19,042 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:19,042 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 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] [2018-01-30 02:30:19,042 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1551516397, now seen corresponding path program 23 times [2018-01-30 02:30:19,042 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:19,042 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:19,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:19,043 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:19,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:19,051 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2509 backedges. 0 proven. 2509 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:19,845 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:19,845 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 [2018-01-30 02:30:19,849 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:30:19,856 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,859 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,860 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,861 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,862 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,865 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,866 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,868 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,870 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,872 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,873 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,878 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:19,886 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:19,888 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2509 backedges. 0 proven. 2509 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:20,364 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:20,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2018-01-30 02:30:20,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-30 02:30:20,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-30 02:30:20,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 02:30:20,365 INFO L87 Difference]: Start difference. First operand 608 states and 802 transitions. Second operand 53 states. [2018-01-30 02:30:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:21,484 INFO L93 Difference]: Finished difference Result 677 states and 891 transitions. [2018-01-30 02:30:21,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-30 02:30:21,484 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 246 [2018-01-30 02:30:21,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:21,486 INFO L225 Difference]: With dead ends: 677 [2018-01-30 02:30:21,486 INFO L226 Difference]: Without dead ends: 654 [2018-01-30 02:30:21,487 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2018-01-30 02:30:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2018-01-30 02:30:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 631. [2018-01-30 02:30:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2018-01-30 02:30:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 833 transitions. [2018-01-30 02:30:21,519 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 833 transitions. Word has length 246 [2018-01-30 02:30:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:21,519 INFO L432 AbstractCegarLoop]: Abstraction has 631 states and 833 transitions. [2018-01-30 02:30:21,519 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-30 02:30:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 833 transitions. [2018-01-30 02:30:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-01-30 02:30:21,520 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:21,520 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 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] [2018-01-30 02:30:21,520 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:21,521 INFO L82 PathProgramCache]: Analyzing trace with hash -771214832, now seen corresponding path program 24 times [2018-01-30 02:30:21,521 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:21,521 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:21,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:21,521 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:21,521 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:21,528 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 0 proven. 2726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:22,861 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:22,861 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 [2018-01-30 02:30:22,866 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:30:22,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,875 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,876 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,879 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,880 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,881 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,884 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,885 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,889 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,891 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,894 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,895 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,896 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,898 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,900 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,903 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,905 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,906 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:30:22,907 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:22,909 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 0 proven. 2726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:23,015 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:23,016 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2018-01-30 02:30:23,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-01-30 02:30:23,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-01-30 02:30:23,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-01-30 02:30:23,017 INFO L87 Difference]: Start difference. First operand 631 states and 833 transitions. Second operand 55 states. [2018-01-30 02:30:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:25,321 INFO L93 Difference]: Finished difference Result 700 states and 922 transitions. [2018-01-30 02:30:25,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-01-30 02:30:25,321 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 255 [2018-01-30 02:30:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:25,323 INFO L225 Difference]: With dead ends: 700 [2018-01-30 02:30:25,323 INFO L226 Difference]: Without dead ends: 677 [2018-01-30 02:30:25,324 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2018-01-30 02:30:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2018-01-30 02:30:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 654. [2018-01-30 02:30:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2018-01-30 02:30:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 864 transitions. [2018-01-30 02:30:25,343 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 864 transitions. Word has length 255 [2018-01-30 02:30:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:25,343 INFO L432 AbstractCegarLoop]: Abstraction has 654 states and 864 transitions. [2018-01-30 02:30:25,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-01-30 02:30:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 864 transitions. [2018-01-30 02:30:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-01-30 02:30:25,345 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:25,345 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 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] [2018-01-30 02:30:25,345 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:25,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1986197069, now seen corresponding path program 25 times [2018-01-30 02:30:25,345 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:25,345 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:25,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:25,346 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:25,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:25,355 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 0 proven. 2952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:26,229 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:26,229 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 [2018-01-30 02:30:26,234 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:30:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:26,267 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 0 proven. 2952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:26,383 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:26,384 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2018-01-30 02:30:26,384 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-30 02:30:26,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-30 02:30:26,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 02:30:26,384 INFO L87 Difference]: Start difference. First operand 654 states and 864 transitions. Second operand 57 states. [2018-01-30 02:30:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:27,556 INFO L93 Difference]: Finished difference Result 723 states and 953 transitions. [2018-01-30 02:30:27,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-01-30 02:30:27,557 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 264 [2018-01-30 02:30:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:27,558 INFO L225 Difference]: With dead ends: 723 [2018-01-30 02:30:27,559 INFO L226 Difference]: Without dead ends: 700 [2018-01-30 02:30:27,559 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2018-01-30 02:30:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2018-01-30 02:30:27,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 677. [2018-01-30 02:30:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2018-01-30 02:30:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 895 transitions. [2018-01-30 02:30:27,581 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 895 transitions. Word has length 264 [2018-01-30 02:30:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:27,581 INFO L432 AbstractCegarLoop]: Abstraction has 677 states and 895 transitions. [2018-01-30 02:30:27,581 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-30 02:30:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 895 transitions. [2018-01-30 02:30:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-01-30 02:30:27,583 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:27,583 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 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] [2018-01-30 02:30:27,583 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:27,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1364007280, now seen corresponding path program 26 times [2018-01-30 02:30:27,583 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:27,583 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:27,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:27,583 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:30:27,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:27,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 0 proven. 3187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:28,677 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:28,677 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 [2018-01-30 02:30:28,683 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:30:28,691 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:28,714 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:28,717 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:28,719 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 0 proven. 3187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:28,829 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:28,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2018-01-30 02:30:28,829 INFO L409 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-01-30 02:30:28,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-01-30 02:30:28,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2018-01-30 02:30:28,830 INFO L87 Difference]: Start difference. First operand 677 states and 895 transitions. Second operand 59 states. [2018-01-30 02:30:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:30,101 INFO L93 Difference]: Finished difference Result 746 states and 984 transitions. [2018-01-30 02:30:30,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-01-30 02:30:30,101 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 273 [2018-01-30 02:30:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:30,103 INFO L225 Difference]: With dead ends: 746 [2018-01-30 02:30:30,104 INFO L226 Difference]: Without dead ends: 723 [2018-01-30 02:30:30,104 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2018-01-30 02:30:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2018-01-30 02:30:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 700. [2018-01-30 02:30:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2018-01-30 02:30:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 926 transitions. [2018-01-30 02:30:30,153 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 926 transitions. Word has length 273 [2018-01-30 02:30:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:30,153 INFO L432 AbstractCegarLoop]: Abstraction has 700 states and 926 transitions. [2018-01-30 02:30:30,153 INFO L433 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-01-30 02:30:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 926 transitions. [2018-01-30 02:30:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-01-30 02:30:30,155 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:30,158 INFO L350 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 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] [2018-01-30 02:30:30,158 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:30,158 INFO L82 PathProgramCache]: Analyzing trace with hash -680104365, now seen corresponding path program 27 times [2018-01-30 02:30:30,159 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:30,159 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:30,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:30,159 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:30,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:30,179 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3431 backedges. 0 proven. 3431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:31,518 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:31,518 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 [2018-01-30 02:30:31,523 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:30:31,531 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,533 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,534 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,535 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,536 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,538 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,539 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,540 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,541 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,542 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,544 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,546 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,547 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,548 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,549 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,551 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,552 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,553 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,555 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,556 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,557 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,559 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,560 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,562 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,563 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,565 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,567 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,568 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:30:31,569 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:31,571 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3431 backedges. 0 proven. 3431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:31,680 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:31,681 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2018-01-30 02:30:31,681 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-30 02:30:31,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-30 02:30:31,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 02:30:31,681 INFO L87 Difference]: Start difference. First operand 700 states and 926 transitions. Second operand 61 states. [2018-01-30 02:30:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:33,037 INFO L93 Difference]: Finished difference Result 769 states and 1015 transitions. [2018-01-30 02:30:33,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-30 02:30:33,037 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 282 [2018-01-30 02:30:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:33,039 INFO L225 Difference]: With dead ends: 769 [2018-01-30 02:30:33,040 INFO L226 Difference]: Without dead ends: 746 [2018-01-30 02:30:33,041 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2018-01-30 02:30:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-01-30 02:30:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 723. [2018-01-30 02:30:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2018-01-30 02:30:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 957 transitions. [2018-01-30 02:30:33,062 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 957 transitions. Word has length 282 [2018-01-30 02:30:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:33,063 INFO L432 AbstractCegarLoop]: Abstraction has 723 states and 957 transitions. [2018-01-30 02:30:33,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-30 02:30:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 957 transitions. [2018-01-30 02:30:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-01-30 02:30:33,064 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:33,064 INFO L350 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 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] [2018-01-30 02:30:33,064 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:33,065 INFO L82 PathProgramCache]: Analyzing trace with hash -441784112, now seen corresponding path program 28 times [2018-01-30 02:30:33,065 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:33,065 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:33,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:33,065 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:33,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:33,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3684 backedges. 0 proven. 3684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:34,127 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:34,127 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 [2018-01-30 02:30:34,150 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:30:34,188 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:34,191 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3684 backedges. 0 proven. 3684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:34,285 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:34,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2018-01-30 02:30:34,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-30 02:30:34,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-30 02:30:34,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 02:30:34,285 INFO L87 Difference]: Start difference. First operand 723 states and 957 transitions. Second operand 63 states. [2018-01-30 02:30:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:35,652 INFO L93 Difference]: Finished difference Result 792 states and 1046 transitions. [2018-01-30 02:30:35,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-01-30 02:30:35,652 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 291 [2018-01-30 02:30:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:35,654 INFO L225 Difference]: With dead ends: 792 [2018-01-30 02:30:35,654 INFO L226 Difference]: Without dead ends: 769 [2018-01-30 02:30:35,657 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2018-01-30 02:30:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2018-01-30 02:30:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 746. [2018-01-30 02:30:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2018-01-30 02:30:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 988 transitions. [2018-01-30 02:30:35,679 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 988 transitions. Word has length 291 [2018-01-30 02:30:35,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:35,679 INFO L432 AbstractCegarLoop]: Abstraction has 746 states and 988 transitions. [2018-01-30 02:30:35,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-30 02:30:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 988 transitions. [2018-01-30 02:30:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-01-30 02:30:35,681 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:35,681 INFO L350 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 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] [2018-01-30 02:30:35,681 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:35,681 INFO L82 PathProgramCache]: Analyzing trace with hash -641996045, now seen corresponding path program 29 times [2018-01-30 02:30:35,681 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:35,681 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:35,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:35,682 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:35,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:35,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:30:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 0 proven. 3946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:36,864 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:30:36,864 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 [2018-01-30 02:30:36,868 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:30:36,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,876 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,878 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,878 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,879 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,881 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,885 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,886 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,890 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,891 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,892 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,895 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,896 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,898 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,901 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,903 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,904 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,906 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,908 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:30:36,912 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:30:36,915 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:30:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 0 proven. 3946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:30:37,002 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:30:37,002 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2018-01-30 02:30:37,002 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-01-30 02:30:37,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-01-30 02:30:37,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-01-30 02:30:37,003 INFO L87 Difference]: Start difference. First operand 746 states and 988 transitions. Second operand 65 states. [2018-01-30 02:30:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:30:38,829 INFO L93 Difference]: Finished difference Result 815 states and 1077 transitions. [2018-01-30 02:30:38,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-01-30 02:30:38,829 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 300 [2018-01-30 02:30:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:30:38,831 INFO L225 Difference]: With dead ends: 815 [2018-01-30 02:30:38,832 INFO L226 Difference]: Without dead ends: 792 [2018-01-30 02:30:38,833 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2018-01-30 02:30:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2018-01-30 02:30:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 769. [2018-01-30 02:30:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2018-01-30 02:30:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1019 transitions. [2018-01-30 02:30:38,858 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1019 transitions. Word has length 300 [2018-01-30 02:30:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:30:38,859 INFO L432 AbstractCegarLoop]: Abstraction has 769 states and 1019 transitions. [2018-01-30 02:30:38,859 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-01-30 02:30:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1019 transitions. [2018-01-30 02:30:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-01-30 02:30:38,860 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:30:38,861 INFO L350 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 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] [2018-01-30 02:30:38,861 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:30:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash -508059600, now seen corresponding path program 30 times [2018-01-30 02:30:38,861 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:30:38,861 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:30:38,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:38,861 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:30:38,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:30:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:30:38,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-30 02:30:39,513 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 02:30:39,516 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 02:30:39,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:30:39 BasicIcfg [2018-01-30 02:30:39,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 02:30:39,517 INFO L168 Benchmark]: Toolchain (without parser) took 58766.28 ms. Allocated memory was 150.5 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 115.6 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 367.4 MB. Max. memory is 5.3 GB. [2018-01-30 02:30:39,517 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 150.5 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:30:39,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.47 ms. Allocated memory is still 150.5 MB. Free memory was 115.4 MB in the beginning and 106.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 5.3 GB. [2018-01-30 02:30:39,517 INFO L168 Benchmark]: Boogie Preprocessor took 22.61 ms. Allocated memory is still 150.5 MB. Free memory was 106.5 MB in the beginning and 104.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-30 02:30:39,517 INFO L168 Benchmark]: RCFGBuilder took 411.15 ms. Allocated memory is still 150.5 MB. Free memory was 104.7 MB in the beginning and 83.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 5.3 GB. [2018-01-30 02:30:39,517 INFO L168 Benchmark]: IcfgTransformer took 9845.54 ms. Allocated memory was 150.5 MB in the beginning and 1.1 GB in the end (delta: 935.9 MB). Free memory was 83.0 MB in the beginning and 250.8 MB in the end (delta: -167.9 MB). Peak memory consumption was 768.0 MB. Max. memory is 5.3 GB. [2018-01-30 02:30:39,518 INFO L168 Benchmark]: TraceAbstraction took 48368.86 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 563.1 MB). Free memory was 250.8 MB in the beginning and 1.2 GB in the end (delta: -996.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:30:39,519 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 150.5 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 115.47 ms. Allocated memory is still 150.5 MB. Free memory was 115.4 MB in the beginning and 106.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.61 ms. Allocated memory is still 150.5 MB. Free memory was 106.5 MB in the beginning and 104.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 411.15 ms. Allocated memory is still 150.5 MB. Free memory was 104.7 MB in the beginning and 83.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 5.3 GB. * IcfgTransformer took 9845.54 ms. Allocated memory was 150.5 MB in the beginning and 1.1 GB in the end (delta: 935.9 MB). Free memory was 83.0 MB in the beginning and 250.8 MB in the end (delta: -167.9 MB). Peak memory consumption was 768.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 48368.86 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 563.1 MB). Free memory was 250.8 MB in the beginning and 1.2 GB in the end (delta: -996.3 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 98 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 1134 LocStat_NO_SUPPORTING_DISEQUALITIES : 633 LocStat_NO_DISJUNCTIONS : -196 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 136 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 128 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 130 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.012405 RENAME_VARIABLES(MILLISECONDS) : 0.131774 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.000525 PROJECTAWAY(MILLISECONDS) : 0.059916 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.027933 DISJOIN(MILLISECONDS) : 0.157261 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.142938 ADD_EQUALITY(MILLISECONDS) : 0.018608 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.004349 #CONJOIN_DISJUNCTIVE : 1439 #RENAME_VARIABLES : 3407 #UNFREEZE : 0 #CONJOIN : 2226 #PROJECTAWAY : 2200 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 353 #RENAME_VARIABLES_DISJUNCTIVE : 3474 #ADD_EQUALITY : 129 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 6 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was analyzing trace of length 310 with TraceHistMax 32, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 99 locations, 1 error locations. TIMEOUT Result, 48.3s OverallTime, 32 OverallIterations, 32 TraceHistogramMax, 24.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3636 SDtfs, 6745 SDslu, 81073 SDs, 0 SdLazy, 12974 SolverSat, 849 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7010 GetRequests, 5057 SyntacticMatches, 1 SemanticMatches, 1952 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31730 ImplicationChecksByTransitivity, 29.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=769occurred in iteration=31, 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: 0.4s AutomataMinimizationTime, 31 MinimizatonAttempts, 694 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 10188 NumberOfCodeBlocks, 10188 NumberOfCodeBlocksAsserted, 305 NumberOfCheckSat, 10127 ConstructedInterpolants, 0 QuantifiedInterpolants, 5738459 SizeOfPredicates, 960 NumberOfNonLiveVariables, 7350 ConjunctsInSsa, 990 ConjunctsInUnsatCore, 61 InterpolantComputations, 1 PerfectInterpolantSequences, 0/81900 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/data_structures_set_multi_proc_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_02-30-39-525.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/data_structures_set_multi_proc_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-30_02-30-39-525.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/data_structures_set_multi_proc_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-30_02-30-39-525.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/data_structures_set_multi_proc_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-30_02-30-39-525.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/data_structures_set_multi_proc_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_02-30-39-525.csv Completed graceful shutdown