java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:32:34,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:32:34,899 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:32:34,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:32:34,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:32:34,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:32:34,923 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:32:34,927 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:32:34,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:32:34,932 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:32:34,933 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:32:34,933 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:32:34,934 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:32:34,935 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:32:34,938 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:32:34,939 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:32:34,940 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:32:34,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:32:34,943 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:32:34,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:32:34,946 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:32:34,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:32:34,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:32:34,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:32:34,950 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:32:34,951 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:32:34,952 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:32:34,953 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:32:34,954 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:32:34,955 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:32:34,955 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:32:34,956 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:32:34,958 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:32:34,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:32:34,991 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:32:34,992 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:32:34,992 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:32:34,992 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:32:34,992 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:32:34,992 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:32:34,993 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:32:34,993 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:32:34,994 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:32:34,994 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:32:34,994 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:32:34,994 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:32:34,994 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:32:34,995 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:32:34,995 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:32:34,995 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:32:34,996 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:32:34,997 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:32:34,998 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:32:34,998 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:32:34,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:32:34,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:32:34,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:32:34,999 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:32:34,999 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:32:34,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:32:34,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:32:35,000 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:32:35,000 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:32:35,000 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:32:35,000 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:32:35,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:32:35,001 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:32:35,001 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:32:35,001 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:32:35,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:32:35,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:32:35,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:32:35,072 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:32:35,073 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:32:35,074 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35_false-unreach-call.c [2018-10-24 23:32:35,139 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1c9afc9d7/1957c3ec9a2449f1be9630563a3dbef4/FLAGcc78e8a8c [2018-10-24 23:32:35,972 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:32:35,973 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label35_false-unreach-call.c [2018-10-24 23:32:36,007 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1c9afc9d7/1957c3ec9a2449f1be9630563a3dbef4/FLAGcc78e8a8c [2018-10-24 23:32:36,029 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1c9afc9d7/1957c3ec9a2449f1be9630563a3dbef4 [2018-10-24 23:32:36,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:32:36,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:32:36,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:32:36,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:32:36,055 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:32:36,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:32:36" (1/1) ... [2018-10-24 23:32:36,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:36, skipping insertion in model container [2018-10-24 23:32:36,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:32:36" (1/1) ... [2018-10-24 23:32:36,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:32:36,228 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:32:37,560 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:32:37,565 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:32:38,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:32:38,248 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:32:38,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38 WrapperNode [2018-10-24 23:32:38,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:32:38,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:32:38,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:32:38,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:32:38,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:32:38,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:32:38,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:32:38,778 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:32:38,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:38,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:39,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... [2018-10-24 23:32:39,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:32:39,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:32:39,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:32:39,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:32:39,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:32:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:32:39,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:32:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 23:32:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 23:32:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 23:32:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 23:32:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:32:39,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:32:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:32:39,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:32:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:32:39,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:32:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:32:39,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:32:52,061 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:32:52,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:32:52 BoogieIcfgContainer [2018-10-24 23:32:52,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:32:52,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:32:52,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:32:52,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:32:52,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:32:36" (1/3) ... [2018-10-24 23:32:52,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:32:52, skipping insertion in model container [2018-10-24 23:32:52,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:32:38" (2/3) ... [2018-10-24 23:32:52,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:32:52, skipping insertion in model container [2018-10-24 23:32:52,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:32:52" (3/3) ... [2018-10-24 23:32:52,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label35_false-unreach-call.c [2018-10-24 23:32:52,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:32:52,089 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:32:52,107 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:32:52,152 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:32:52,152 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:32:52,152 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:32:52,152 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:32:52,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:32:52,152 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:32:52,153 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:32:52,153 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:32:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 23:32:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 23:32:52,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:32:52,202 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:32:52,204 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:32:52,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:32:52,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1178232324, now seen corresponding path program 1 times [2018-10-24 23:32:52,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:32:52,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:32:52,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:32:52,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:32:52,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:32:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:32:52,586 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:32:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:32:52,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:32:52,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:32:52,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:32:52,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:32:52,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:32:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:32:52,715 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 23:33:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:33:01,401 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 23:33:01,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:33:01,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-24 23:33:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:33:01,442 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 23:33:01,443 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 23:33:01,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:33:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 23:33:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 23:33:01,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 23:33:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-10-24 23:33:01,628 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 14 [2018-10-24 23:33:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:33:01,629 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-10-24 23:33:01,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:33:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-10-24 23:33:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 23:33:01,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:33:01,638 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:33:01,638 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:33:01,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:33:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1320069446, now seen corresponding path program 1 times [2018-10-24 23:33:01,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:33:01,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:01,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:33:01,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:01,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:33:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:33:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:02,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:33:02,158 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:33:02,159 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 91 with the following transitions: [2018-10-24 23:33:02,161 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1879], [1881], [1884], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 23:33:02,208 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:33:02,209 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:33:02,854 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:33:02,858 INFO L272 AbstractInterpreter]: Visited 84 different actions 160 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:33:02,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:33:02,904 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:33:02,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:33:02,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:33:02,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:33:02,918 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:33:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:33:03,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:33:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:03,240 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:33:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:03,762 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:33:03,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 23:33:03,763 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:33:03,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:33:03,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:33:03,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:33:03,766 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 3 states. [2018-10-24 23:33:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:33:14,293 INFO L93 Difference]: Finished difference Result 4738 states and 8557 transitions. [2018-10-24 23:33:14,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:33:14,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2018-10-24 23:33:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:33:14,315 INFO L225 Difference]: With dead ends: 4738 [2018-10-24 23:33:14,315 INFO L226 Difference]: Without dead ends: 3140 [2018-10-24 23:33:14,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 179 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:33:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-10-24 23:33:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140. [2018-10-24 23:33:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2018-10-24 23:33:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4654 transitions. [2018-10-24 23:33:14,420 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4654 transitions. Word has length 90 [2018-10-24 23:33:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:33:14,421 INFO L481 AbstractCegarLoop]: Abstraction has 3140 states and 4654 transitions. [2018-10-24 23:33:14,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:33:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4654 transitions. [2018-10-24 23:33:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-24 23:33:14,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:33:14,432 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:33:14,432 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:33:14,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:33:14,432 INFO L82 PathProgramCache]: Analyzing trace with hash -166182786, now seen corresponding path program 1 times [2018-10-24 23:33:14,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:33:14,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:14,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:33:14,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:14,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:33:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:33:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:14,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:33:14,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:33:14,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:33:14,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:33:14,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:33:14,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:33:14,649 INFO L87 Difference]: Start difference. First operand 3140 states and 4654 transitions. Second operand 5 states. [2018-10-24 23:33:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:33:27,418 INFO L93 Difference]: Finished difference Result 9545 states and 14246 transitions. [2018-10-24 23:33:27,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:33:27,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2018-10-24 23:33:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:33:27,451 INFO L225 Difference]: With dead ends: 9545 [2018-10-24 23:33:27,451 INFO L226 Difference]: Without dead ends: 4810 [2018-10-24 23:33:27,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:33:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2018-10-24 23:33:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4773. [2018-10-24 23:33:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4773 states. [2018-10-24 23:33:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 6643 transitions. [2018-10-24 23:33:27,610 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 6643 transitions. Word has length 94 [2018-10-24 23:33:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:33:27,611 INFO L481 AbstractCegarLoop]: Abstraction has 4773 states and 6643 transitions. [2018-10-24 23:33:27,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:33:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 6643 transitions. [2018-10-24 23:33:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 23:33:27,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:33:27,613 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:33:27,613 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:33:27,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:33:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash 310744714, now seen corresponding path program 1 times [2018-10-24 23:33:27,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:33:27,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:27,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:33:27,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:27,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:33:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:33:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:28,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:33:28,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:33:28,034 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:33:28,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:33:28,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:33:28,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:33:28,035 INFO L87 Difference]: Start difference. First operand 4773 states and 6643 transitions. Second operand 6 states. [2018-10-24 23:33:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:33:50,492 INFO L93 Difference]: Finished difference Result 19166 states and 27862 transitions. [2018-10-24 23:33:50,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:33:50,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 23:33:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:33:50,582 INFO L225 Difference]: With dead ends: 19166 [2018-10-24 23:33:50,583 INFO L226 Difference]: Without dead ends: 14399 [2018-10-24 23:33:50,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:33:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14399 states. [2018-10-24 23:33:50,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14399 to 14357. [2018-10-24 23:33:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14357 states. [2018-10-24 23:33:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14357 states to 14357 states and 19241 transitions. [2018-10-24 23:33:51,016 INFO L78 Accepts]: Start accepts. Automaton has 14357 states and 19241 transitions. Word has length 104 [2018-10-24 23:33:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:33:51,017 INFO L481 AbstractCegarLoop]: Abstraction has 14357 states and 19241 transitions. [2018-10-24 23:33:51,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:33:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 14357 states and 19241 transitions. [2018-10-24 23:33:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 23:33:51,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:33:51,020 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:33:51,020 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:33:51,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:33:51,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1931548089, now seen corresponding path program 1 times [2018-10-24 23:33:51,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:33:51,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:51,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:33:51,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:51,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:33:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:33:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:51,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:33:51,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:33:51,187 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:33:51,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:33:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:33:51,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:33:51,188 INFO L87 Difference]: Start difference. First operand 14357 states and 19241 transitions. Second operand 3 states. [2018-10-24 23:33:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:33:56,885 INFO L93 Difference]: Finished difference Result 36458 states and 50564 transitions. [2018-10-24 23:33:56,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:33:56,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2018-10-24 23:33:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:33:56,998 INFO L225 Difference]: With dead ends: 36458 [2018-10-24 23:33:56,998 INFO L226 Difference]: Without dead ends: 22107 [2018-10-24 23:33:57,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:33:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2018-10-24 23:33:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 22107. [2018-10-24 23:33:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22107 states. [2018-10-24 23:33:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22107 states to 22107 states and 28393 transitions. [2018-10-24 23:33:57,542 INFO L78 Accepts]: Start accepts. Automaton has 22107 states and 28393 transitions. Word has length 163 [2018-10-24 23:33:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:33:57,542 INFO L481 AbstractCegarLoop]: Abstraction has 22107 states and 28393 transitions. [2018-10-24 23:33:57,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:33:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 22107 states and 28393 transitions. [2018-10-24 23:33:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-24 23:33:57,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:33:57,549 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:33:57,553 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:33:57,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:33:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash -997960253, now seen corresponding path program 1 times [2018-10-24 23:33:57,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:33:57,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:57,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:33:57,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:33:57,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:33:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:33:57,881 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:33:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:33:58,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:33:58,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:33:58,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:33:58,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:33:58,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:33:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:33:58,122 INFO L87 Difference]: Start difference. First operand 22107 states and 28393 transitions. Second operand 6 states. [2018-10-24 23:34:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:34:11,328 INFO L93 Difference]: Finished difference Result 54874 states and 74686 transitions. [2018-10-24 23:34:11,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:34:11,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2018-10-24 23:34:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:34:11,463 INFO L225 Difference]: With dead ends: 54874 [2018-10-24 23:34:11,463 INFO L226 Difference]: Without dead ends: 32773 [2018-10-24 23:34:11,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:34:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32773 states. [2018-10-24 23:34:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32773 to 32721. [2018-10-24 23:34:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32721 states. [2018-10-24 23:34:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32721 states to 32721 states and 44049 transitions. [2018-10-24 23:34:12,196 INFO L78 Accepts]: Start accepts. Automaton has 32721 states and 44049 transitions. Word has length 213 [2018-10-24 23:34:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:34:12,197 INFO L481 AbstractCegarLoop]: Abstraction has 32721 states and 44049 transitions. [2018-10-24 23:34:12,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:34:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 32721 states and 44049 transitions. [2018-10-24 23:34:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 23:34:12,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:34:12,204 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:34:12,204 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:34:12,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:34:12,205 INFO L82 PathProgramCache]: Analyzing trace with hash 832728224, now seen corresponding path program 1 times [2018-10-24 23:34:12,205 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:34:12,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:34:12,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:34:12,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:34:12,206 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:34:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:34:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:34:12,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:34:12,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:34:12,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-24 23:34:12,762 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1879], [1881], [1884], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2440], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 23:34:12,778 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:34:12,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:34:14,994 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:34:14,995 INFO L272 AbstractInterpreter]: Visited 155 different actions 461 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 23:34:15,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:34:15,031 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:34:15,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:34:15,031 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-24 23:34:15,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:34:15,044 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:34:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:34:15,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:34:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:34:15,633 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:34:15,788 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 23:34:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:34:16,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:34:16,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-24 23:34:16,679 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:34:16,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:34:16,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:34:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-10-24 23:34:16,681 INFO L87 Difference]: Start difference. First operand 32721 states and 44049 transitions. Second operand 9 states. [2018-10-24 23:34:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:34:35,686 INFO L93 Difference]: Finished difference Result 127148 states and 224837 transitions. [2018-10-24 23:34:35,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:34:35,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2018-10-24 23:34:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:34:36,263 INFO L225 Difference]: With dead ends: 127148 [2018-10-24 23:34:36,263 INFO L226 Difference]: Without dead ends: 94433 [2018-10-24 23:34:36,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:34:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94433 states. [2018-10-24 23:34:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94433 to 93745. [2018-10-24 23:34:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93745 states. [2018-10-24 23:34:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93745 states to 93745 states and 147802 transitions. [2018-10-24 23:34:39,380 INFO L78 Accepts]: Start accepts. Automaton has 93745 states and 147802 transitions. Word has length 250 [2018-10-24 23:34:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:34:39,381 INFO L481 AbstractCegarLoop]: Abstraction has 93745 states and 147802 transitions. [2018-10-24 23:34:39,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:34:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 93745 states and 147802 transitions. [2018-10-24 23:34:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-24 23:34:39,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:34:39,398 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:34:39,398 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:34:39,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:34:39,399 INFO L82 PathProgramCache]: Analyzing trace with hash -855990824, now seen corresponding path program 1 times [2018-10-24 23:34:39,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:34:39,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:34:39,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:34:39,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:34:39,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:34:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:34:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 23:34:40,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:34:40,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:34:40,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:34:40,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:34:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:34:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:34:40,398 INFO L87 Difference]: Start difference. First operand 93745 states and 147802 transitions. Second operand 3 states. [2018-10-24 23:34:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:34:47,569 INFO L93 Difference]: Finished difference Result 215531 states and 350469 transitions. [2018-10-24 23:34:47,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:34:47,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2018-10-24 23:34:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:34:48,360 INFO L225 Difference]: With dead ends: 215531 [2018-10-24 23:34:48,360 INFO L226 Difference]: Without dead ends: 121792 [2018-10-24 23:34:48,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:34:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121792 states. [2018-10-24 23:34:52,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121792 to 121008. [2018-10-24 23:34:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121008 states. [2018-10-24 23:34:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121008 states to 121008 states and 192469 transitions. [2018-10-24 23:34:52,944 INFO L78 Accepts]: Start accepts. Automaton has 121008 states and 192469 transitions. Word has length 254 [2018-10-24 23:34:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:34:52,945 INFO L481 AbstractCegarLoop]: Abstraction has 121008 states and 192469 transitions. [2018-10-24 23:34:52,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:34:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 121008 states and 192469 transitions. [2018-10-24 23:34:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-24 23:34:52,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:34:52,991 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:34:52,991 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:34:52,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:34:52,992 INFO L82 PathProgramCache]: Analyzing trace with hash -477821558, now seen corresponding path program 1 times [2018-10-24 23:34:52,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:34:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:34:52,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:34:52,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:34:52,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:34:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:34:53,396 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:34:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:34:53,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:34:53,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:34:53,890 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:34:53,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:34:53,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:34:53,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:34:53,894 INFO L87 Difference]: Start difference. First operand 121008 states and 192469 transitions. Second operand 6 states. [2018-10-24 23:35:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:35:03,960 INFO L93 Difference]: Finished difference Result 241774 states and 389957 transitions. [2018-10-24 23:35:03,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:35:03,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 357 [2018-10-24 23:35:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:35:04,598 INFO L225 Difference]: With dead ends: 241774 [2018-10-24 23:35:04,598 INFO L226 Difference]: Without dead ends: 120772 [2018-10-24 23:35:06,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:35:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120772 states. [2018-10-24 23:35:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120772 to 120518. [2018-10-24 23:35:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120518 states. [2018-10-24 23:35:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120518 states to 120518 states and 175446 transitions. [2018-10-24 23:35:08,730 INFO L78 Accepts]: Start accepts. Automaton has 120518 states and 175446 transitions. Word has length 357 [2018-10-24 23:35:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:35:08,731 INFO L481 AbstractCegarLoop]: Abstraction has 120518 states and 175446 transitions. [2018-10-24 23:35:08,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:35:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 120518 states and 175446 transitions. [2018-10-24 23:35:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-10-24 23:35:08,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:35:08,784 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:35:08,785 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:35:08,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:35:08,785 INFO L82 PathProgramCache]: Analyzing trace with hash 111281275, now seen corresponding path program 1 times [2018-10-24 23:35:08,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:35:08,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:35:08,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:35:08,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:35:08,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:35:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:35:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-24 23:35:10,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:35:10,926 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:35:10,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 444 with the following transitions: [2018-10-24 23:35:10,927 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1879], [1881], [1884], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2416], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2876], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 23:35:10,933 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:35:10,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:35:18,594 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:35:18,594 INFO L272 AbstractInterpreter]: Visited 209 different actions 1047 times. Merged at 8 different actions 49 times. Widened at 1 different actions 5 times. Found 8 fixpoints after 5 different actions. Largest state had 26 variables. [2018-10-24 23:35:18,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:35:18,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:35:18,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:35:18,621 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-24 23:35:18,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:35:18,634 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:35:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:35:18,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:35:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-24 23:35:21,013 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:35:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-24 23:35:21,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:35:21,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-10-24 23:35:21,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:35:21,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:35:21,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:35:21,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-10-24 23:35:21,590 INFO L87 Difference]: Start difference. First operand 120518 states and 175446 transitions. Second operand 3 states. [2018-10-24 23:35:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:35:29,841 INFO L93 Difference]: Finished difference Result 278122 states and 410264 transitions. [2018-10-24 23:35:29,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:35:29,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 443 [2018-10-24 23:35:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:35:30,541 INFO L225 Difference]: With dead ends: 278122 [2018-10-24 23:35:30,541 INFO L226 Difference]: Without dead ends: 157610 [2018-10-24 23:35:31,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 887 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-10-24 23:35:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157610 states. [2018-10-24 23:35:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157610 to 157549. [2018-10-24 23:35:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157549 states. [2018-10-24 23:35:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157549 states to 157549 states and 213729 transitions. [2018-10-24 23:35:35,041 INFO L78 Accepts]: Start accepts. Automaton has 157549 states and 213729 transitions. Word has length 443 [2018-10-24 23:35:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:35:35,041 INFO L481 AbstractCegarLoop]: Abstraction has 157549 states and 213729 transitions. [2018-10-24 23:35:35,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:35:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 157549 states and 213729 transitions. [2018-10-24 23:35:35,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-10-24 23:35:35,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:35:35,085 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:35:35,085 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:35:35,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:35:35,086 INFO L82 PathProgramCache]: Analyzing trace with hash -389381105, now seen corresponding path program 1 times [2018-10-24 23:35:35,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:35:35,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:35:35,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:35:35,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:35:35,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:35:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:35:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 23:35:35,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:35:35,666 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:35:35,666 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 502 with the following transitions: [2018-10-24 23:35:35,666 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1879], [1881], [1884], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2440], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3068], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 23:35:35,673 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:35:35,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:35:37,381 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:35:37,382 INFO L272 AbstractInterpreter]: Visited 257 different actions 775 times. Merged at 8 different actions 28 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 23:35:37,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:35:37,418 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:35:37,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:35:37,418 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:35:37,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:35:37,426 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:35:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:35:37,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:35:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 23:35:37,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:35:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 23:35:38,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:35:38,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-24 23:35:38,519 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:35:38,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 23:35:38,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 23:35:38,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:35:38,522 INFO L87 Difference]: Start difference. First operand 157549 states and 213729 transitions. Second operand 7 states. [2018-10-24 23:36:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:36:03,859 INFO L93 Difference]: Finished difference Result 379662 states and 543951 transitions. [2018-10-24 23:36:03,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 23:36:03,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2018-10-24 23:36:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:36:04,682 INFO L225 Difference]: With dead ends: 379662 [2018-10-24 23:36:04,683 INFO L226 Difference]: Without dead ends: 222119 [2018-10-24 23:36:05,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 1004 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:36:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222119 states. [2018-10-24 23:36:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222119 to 218784. [2018-10-24 23:36:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218784 states. [2018-10-24 23:36:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218784 states to 218784 states and 293426 transitions. [2018-10-24 23:36:10,139 INFO L78 Accepts]: Start accepts. Automaton has 218784 states and 293426 transitions. Word has length 501 [2018-10-24 23:36:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:36:10,140 INFO L481 AbstractCegarLoop]: Abstraction has 218784 states and 293426 transitions. [2018-10-24 23:36:10,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 23:36:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 218784 states and 293426 transitions. [2018-10-24 23:36:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-24 23:36:10,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:36:10,226 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:36:10,226 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:36:10,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:36:10,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1103360710, now seen corresponding path program 1 times [2018-10-24 23:36:10,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:36:10,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:36:10,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:36:10,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:36:10,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:36:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 23:36:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-24 23:36:11,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:36:11,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:36:11,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 549 with the following transitions: [2018-10-24 23:36:11,616 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1879], [1881], [1884], [1892], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2644], [2645], [2649], [2653], [2657], [2661], [2664], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3068], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 23:36:11,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:36:11,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:36:11,622 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 23:36:11,623 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 23:36:11,623 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 23:36:11,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:36:11,623 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:36:11,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:36:11,636 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:36:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:36:11,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:36:11,813 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 23:36:12,014 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:36:12,014 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:36:12,018 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:36:12,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:36:12 BoogieIcfgContainer [2018-10-24 23:36:12,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:36:12,020 INFO L168 Benchmark]: Toolchain (without parser) took 215975.64 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -600.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 23:36:12,021 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:36:12,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2200.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:36:12,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 526.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 23:36:12,024 INFO L168 Benchmark]: Boogie Preprocessor took 347.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2018-10-24 23:36:12,025 INFO L168 Benchmark]: RCFGBuilder took 12937.53 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 178.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -177.3 MB). Peak memory consumption was 669.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:36:12,026 INFO L168 Benchmark]: TraceAbstraction took 199955.42 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 382.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 23:36:12,030 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2200.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 526.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 347.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12937.53 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 178.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -177.3 MB). Peak memory consumption was 669.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199955.42 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 382.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was analyzing trace of length 549 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 199.8s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 151.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6443 SDtfs, 27991 SDslu, 1524 SDs, 0 SdLazy, 51595 SolverSat, 12295 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 116.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2670 GetRequests, 2591 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218784occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.4s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 5253 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 3767 NumberOfCodeBlocks, 3767 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5032 ConstructedInterpolants, 2 QuantifiedInterpolants, 5375535 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2170 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 2485/2530 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown