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/Problem17_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:45:29,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:45:29,986 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:45:30,001 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:45:30,002 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:45:30,003 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:45:30,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:45:30,006 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:45:30,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:45:30,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:45:30,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:45:30,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:45:30,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:45:30,011 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:45:30,012 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:45:30,013 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:45:30,014 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:45:30,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:45:30,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:45:30,019 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:45:30,020 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:45:30,022 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:45:30,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:45:30,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:45:30,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:45:30,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:45:30,027 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:45:30,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:45:30,028 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:45:30,029 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:45:30,030 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:45:30,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 23:45:30,031 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 23:45:30,031 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 23:45:30,032 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 23:45:30,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 23:45:30,033 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 23:45:30,058 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:45:30,058 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:45:30,060 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:45:30,060 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:45:30,060 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:45:30,060 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:45:30,061 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:45:30,061 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:45:30,061 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:45:30,062 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:45:30,062 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:45:30,062 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:45:30,062 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:45:30,062 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:45:30,063 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:45:30,063 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:45:30,063 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:45:30,063 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:45:30,064 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:45:30,064 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:45:30,064 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:45:30,064 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:45:30,064 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:45:30,065 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:45:30,065 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:45:30,065 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:45:30,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:45:30,065 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:45:30,066 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:45:30,066 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:45:30,066 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:45:30,066 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:45:30,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:45:30,067 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:45:30,067 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:45:30,067 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:45:30,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:45:30,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:45:30,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:45:30,133 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:45:30,133 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:45:30,134 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-10-24 23:45:30,194 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5bc03835/b1de5cbd9e7b45449512421e96e9a59f/FLAG83b136b1c [2018-10-24 23:45:30,851 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:45:30,852 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-10-24 23:45:30,881 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5bc03835/b1de5cbd9e7b45449512421e96e9a59f/FLAG83b136b1c [2018-10-24 23:45:30,901 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5bc03835/b1de5cbd9e7b45449512421e96e9a59f [2018-10-24 23:45:30,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:45:30,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:45:30,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:45:30,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:45:30,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:45:30,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:30" (1/1) ... [2018-10-24 23:45:30,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694b18b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:30, skipping insertion in model container [2018-10-24 23:45:30,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:30" (1/1) ... [2018-10-24 23:45:30,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:45:31,069 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:45:32,101 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:45:32,106 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:45:32,489 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:45:32,515 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:45:32,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32 WrapperNode [2018-10-24 23:45:32,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:45:32,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:45:32,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:45:32,517 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:45:32,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:32,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:32,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:45:32,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:45:32,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:45:32,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:45:33,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (1/1) ... [2018-10-24 23:45:33,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:45:33,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:45:33,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:45:33,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:45:33,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (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 23:45:33,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:45:33,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:45:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:45:33,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:45:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:45:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:45:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:45:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:45:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:45:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:45:46,668 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:45:46,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:46 BoogieIcfgContainer [2018-10-24 23:45:46,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:45:46,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:45:46,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:45:46,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:45:46,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:45:30" (1/3) ... [2018-10-24 23:45:46,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46674a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:46, skipping insertion in model container [2018-10-24 23:45:46,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:32" (2/3) ... [2018-10-24 23:45:46,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46674a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:46, skipping insertion in model container [2018-10-24 23:45:46,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:46" (3/3) ... [2018-10-24 23:45:46,677 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label31_false-unreach-call.c [2018-10-24 23:45:46,687 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:45:46,697 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:45:46,715 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:45:46,761 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:45:46,762 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:45:46,762 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:45:46,762 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:45:46,762 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:45:46,762 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:45:46,762 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:45:46,763 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:45:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 23:45:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 23:45:46,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:46,812 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:45:46,815 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:46,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1332199658, now seen corresponding path program 1 times [2018-10-24 23:45:46,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:46,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:46,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:46,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:46,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:47,236 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 23:45:47,242 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 23:45:47,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:45:47,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:45:47,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:45:47,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:45:47,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:45:47,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:45:47,270 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 23:45:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:45:55,672 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-10-24 23:45:55,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:45:55,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-24 23:45:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:45:55,708 INFO L225 Difference]: With dead ends: 2118 [2018-10-24 23:45:55,708 INFO L226 Difference]: Without dead ends: 1508 [2018-10-24 23:45:55,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:45:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-10-24 23:45:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-10-24 23:45:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-24 23:45:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-10-24 23:45:55,859 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 15 [2018-10-24 23:45:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:45:55,860 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-10-24 23:45:55,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:45:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-10-24 23:45:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-24 23:45:55,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:55,865 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:45:55,866 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:55,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:55,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1251140705, now seen corresponding path program 1 times [2018-10-24 23:45:55,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:55,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:55,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:55,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:55,871 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:45:56,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:45:56,462 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:45:56,463 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 91 with the following transitions: [2018-10-24 23:45:56,465 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:45:56,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:45:56,514 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:45:58,500 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:45:58,502 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:45:58,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:58,547 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:45:58,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:45:58,547 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 23:45:58,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:58,561 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:45:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:58,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:45:59,395 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-24 23:45:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:45:59,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:45:59,865 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 23:46:00,268 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 13 [2018-10-24 23:46:00,683 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-24 23:46:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:01,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:46:01,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-24 23:46:01,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:01,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:46:01,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:46:01,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:46:01,046 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-10-24 23:46:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:30,821 INFO L93 Difference]: Finished difference Result 3453 states and 5550 transitions. [2018-10-24 23:46:30,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:46:30,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-10-24 23:46:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:30,839 INFO L225 Difference]: With dead ends: 3453 [2018-10-24 23:46:30,839 INFO L226 Difference]: Without dead ends: 2420 [2018-10-24 23:46:30,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:46:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2018-10-24 23:46:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2412. [2018-10-24 23:46:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2018-10-24 23:46:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3754 transitions. [2018-10-24 23:46:30,952 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3754 transitions. Word has length 90 [2018-10-24 23:46:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:30,953 INFO L481 AbstractCegarLoop]: Abstraction has 2412 states and 3754 transitions. [2018-10-24 23:46:30,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:46:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3754 transitions. [2018-10-24 23:46:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 23:46:30,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:30,962 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:46:30,962 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:30,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:30,963 INFO L82 PathProgramCache]: Analyzing trace with hash 785805159, now seen corresponding path program 1 times [2018-10-24 23:46:30,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:30,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:30,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:30,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:30,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:31,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:31,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:46:31,264 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2018-10-24 23:46:31,264 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:46:31,270 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:46:31,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:46:31,614 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:46:31,614 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:46:31,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:31,654 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:46:31,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:31,654 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:46:31,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:31,668 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:46:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:31,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:46:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:31,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:46:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:32,141 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:46:32,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 23:46:32,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:32,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:46:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:46:32,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:46:32,142 INFO L87 Difference]: Start difference. First operand 2412 states and 3754 transitions. Second operand 3 states. [2018-10-24 23:46:38,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:38,654 INFO L93 Difference]: Finished difference Result 6995 states and 11104 transitions. [2018-10-24 23:46:38,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:46:38,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2018-10-24 23:46:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:38,682 INFO L225 Difference]: With dead ends: 6995 [2018-10-24 23:46:38,683 INFO L226 Difference]: Without dead ends: 4589 [2018-10-24 23:46:38,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:46:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2018-10-24 23:46:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4588. [2018-10-24 23:46:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4588 states. [2018-10-24 23:46:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7097 transitions. [2018-10-24 23:46:38,829 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7097 transitions. Word has length 103 [2018-10-24 23:46:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:38,829 INFO L481 AbstractCegarLoop]: Abstraction has 4588 states and 7097 transitions. [2018-10-24 23:46:38,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:46:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7097 transitions. [2018-10-24 23:46:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 23:46:38,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:38,844 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 23:46:38,844 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:38,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash -910710122, now seen corresponding path program 1 times [2018-10-24 23:46:38,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:38,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:38,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:38,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:38,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:39,151 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:46:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 23:46:39,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:39,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:46:39,599 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-24 23:46:39,600 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1290], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:46:39,608 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:46:39,608 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:46:40,602 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:46:40,602 INFO L272 AbstractInterpreter]: Visited 99 different actions 283 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:46:40,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:40,641 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:46:40,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:40,641 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:46:40,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:40,649 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:46:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:40,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:46:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:40,983 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:46:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:41,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:46:41,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 23:46:41,272 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:46:41,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:46:41,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:46:41,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:46:41,278 INFO L87 Difference]: Start difference. First operand 4588 states and 7097 transitions. Second operand 9 states. [2018-10-24 23:46:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:50,224 INFO L93 Difference]: Finished difference Result 11486 states and 17894 transitions. [2018-10-24 23:46:50,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:46:50,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 180 [2018-10-24 23:46:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:50,254 INFO L225 Difference]: With dead ends: 11486 [2018-10-24 23:46:50,255 INFO L226 Difference]: Without dead ends: 6418 [2018-10-24 23:46:50,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 358 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:46:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2018-10-24 23:46:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6406. [2018-10-24 23:46:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6406 states. [2018-10-24 23:46:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 7901 transitions. [2018-10-24 23:46:50,428 INFO L78 Accepts]: Start accepts. Automaton has 6406 states and 7901 transitions. Word has length 180 [2018-10-24 23:46:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:50,429 INFO L481 AbstractCegarLoop]: Abstraction has 6406 states and 7901 transitions. [2018-10-24 23:46:50,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:46:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6406 states and 7901 transitions. [2018-10-24 23:46:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 23:46:50,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:50,432 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 23:46:50,432 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:50,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash -356935277, now seen corresponding path program 1 times [2018-10-24 23:46:50,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:50,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:50,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:50,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:50,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:46:50,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:46:50,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:46:50,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:50,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:46:50,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:46:50,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:46:50,734 INFO L87 Difference]: Start difference. First operand 6406 states and 7901 transitions. Second operand 4 states. [2018-10-24 23:47:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:47:00,224 INFO L93 Difference]: Finished difference Result 23359 states and 29972 transitions. [2018-10-24 23:47:00,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:47:00,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-10-24 23:47:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:47:00,293 INFO L225 Difference]: With dead ends: 23359 [2018-10-24 23:47:00,293 INFO L226 Difference]: Without dead ends: 16959 [2018-10-24 23:47:00,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:47:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2018-10-24 23:47:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 16952. [2018-10-24 23:47:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16952 states. [2018-10-24 23:47:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16952 states to 16952 states and 20917 transitions. [2018-10-24 23:47:00,705 INFO L78 Accepts]: Start accepts. Automaton has 16952 states and 20917 transitions. Word has length 192 [2018-10-24 23:47:00,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:47:00,705 INFO L481 AbstractCegarLoop]: Abstraction has 16952 states and 20917 transitions. [2018-10-24 23:47:00,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:47:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 16952 states and 20917 transitions. [2018-10-24 23:47:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-24 23:47:00,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:47:00,713 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 23:47:00,713 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:47:00,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:47:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1935146459, now seen corresponding path program 1 times [2018-10-24 23:47:00,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:47:00,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:47:00,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:47:00,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:47:00,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:47:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:47:01,435 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 23:47:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 23:47:02,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:47:02,391 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:47:02,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 270 with the following transitions: [2018-10-24 23:47:02,392 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:47:02,398 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:47:02,398 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:47:02,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:47:02,791 INFO L272 AbstractInterpreter]: Visited 175 different actions 349 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 23:47:02,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:47:02,830 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:47:02,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:47:02,830 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 23:47:02,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:47:02,841 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:47:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:47:02,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:47:03,426 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-24 23:47:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 23:47:03,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:47:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 21 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:47:04,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:47:04,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 19 [2018-10-24 23:47:04,819 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:47:04,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 23:47:04,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 23:47:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-10-24 23:47:04,821 INFO L87 Difference]: Start difference. First operand 16952 states and 20917 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 23:49:50,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-24 23:49:50,859 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:49:50,865 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:49:50,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:49:50 BoogieIcfgContainer [2018-10-24 23:49:50,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:49:50,866 INFO L168 Benchmark]: Toolchain (without parser) took 259952.36 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -605.3 MB). Peak memory consumption was 884.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:50,867 INFO L168 Benchmark]: CDTParser took 0.19 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 23:49:50,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1599.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:50,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 477.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 786.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.1 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:50,870 INFO L168 Benchmark]: Boogie Preprocessor took 230.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:50,870 INFO L168 Benchmark]: RCFGBuilder took 13443.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 446.4 MB). Peak memory consumption was 446.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:50,871 INFO L168 Benchmark]: TraceAbstraction took 244195.37 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 703.1 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -309.3 MB). Peak memory consumption was 393.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:50,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1599.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 477.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 786.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.1 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 230.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13443.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 446.4 MB). Peak memory consumption was 446.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244195.37 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 703.1 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -309.3 MB). Peak memory consumption was 393.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 32]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 32). Cancelled while BasicCegarLoop was constructing difference of abstraction (16952states) and FLOYD_HOARE automaton (currently 68 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (9604 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 244.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 229.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2348 SDtfs, 13954 SDslu, 1699 SDs, 0 SdLazy, 21809 SolverSat, 5140 SolverUnsat, 74 SolverUnknown, 0 SolverNotchecked, 209.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1402 GetRequests, 1276 SyntacticMatches, 11 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16952occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.9s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 497 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1491 NumberOfCodeBlocks, 1491 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2119 ConstructedInterpolants, 178 QuantifiedInterpolants, 2700350 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1335 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 538/737 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown