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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:08:45,893 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:08:45,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:08:45,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:08:45,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:08:45,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:08:45,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:08:45,922 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:08:45,925 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:08:45,926 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:08:45,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:08:45,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:08:45,933 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:08:45,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:08:45,938 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:08:45,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:08:45,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:08:45,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:08:45,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:08:45,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:08:45,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:08:45,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:08:45,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:08:45,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:08:45,958 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:08:45,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:08:45,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:08:45,961 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:08:45,962 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:08:45,963 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:08:45,963 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:08:45,964 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 00:08:45,969 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:08:46,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:08:46,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:08:46,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:08:46,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:08:46,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:08:46,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:08:46,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:08:46,003 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:08:46,003 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:08:46,003 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:08:46,003 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:08:46,004 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:08:46,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:08:46,005 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:08:46,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:08:46,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:08:46,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:08:46,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:08:46,005 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:08:46,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:08:46,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:08:46,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:08:46,006 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:08:46,006 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:08:46,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:46,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:08:46,007 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:08:46,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:08:46,007 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:08:46,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:08:46,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:08:46,008 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:08:46,008 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:08:46,008 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:08:46,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:08:46,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:08:46,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:08:46,078 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:08:46,078 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:08:46,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-27 00:08:46,148 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24dfc26de/1d3c29f7eccc4654855cbe89487c3ecb/FLAGa9ec29639 [2018-10-27 00:08:46,837 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:08:46,838 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-27 00:08:46,859 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24dfc26de/1d3c29f7eccc4654855cbe89487c3ecb/FLAGa9ec29639 [2018-10-27 00:08:46,880 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24dfc26de/1d3c29f7eccc4654855cbe89487c3ecb [2018-10-27 00:08:46,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:08:46,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:08:46,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:46,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:08:46,897 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:08:46,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:46" (1/1) ... [2018-10-27 00:08:46,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af4d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:46, skipping insertion in model container [2018-10-27 00:08:46,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:46" (1/1) ... [2018-10-27 00:08:46,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:08:47,012 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:08:47,994 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:47,998 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:08:48,235 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:48,257 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:08:48,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48 WrapperNode [2018-10-27 00:08:48,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:48,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:48,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:08:48,259 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:08:48,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:48,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:08:48,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:08:48,571 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:08:48,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (1/1) ... [2018-10-27 00:08:48,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:08:48,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:08:48,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:08:48,709 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:08:48,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (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 [2018-10-27 00:08:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:08:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:08:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:08:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:08:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:08:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:08:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:08:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:08:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:08:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:08:54,974 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:08:54,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:54 BoogieIcfgContainer [2018-10-27 00:08:54,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:08:54,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:08:54,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:08:54,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:08:54,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:08:46" (1/3) ... [2018-10-27 00:08:54,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c74d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:54, skipping insertion in model container [2018-10-27 00:08:54,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:48" (2/3) ... [2018-10-27 00:08:54,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c74d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:54, skipping insertion in model container [2018-10-27 00:08:54,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:54" (3/3) ... [2018-10-27 00:08:54,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-10-27 00:08:54,992 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:08:55,003 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:08:55,021 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:08:55,080 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:08:55,080 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:08:55,080 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:08:55,080 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:08:55,080 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:08:55,081 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:08:55,081 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:08:55,081 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:08:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 00:08:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 00:08:55,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:55,130 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:55,132 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:55,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:55,137 INFO L82 PathProgramCache]: Analyzing trace with hash 328599972, now seen corresponding path program 1 times [2018-10-27 00:08:55,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:55,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:55,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:55,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:55,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:55,541 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 00:08:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:55,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:55,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:08:55,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:55,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:08:55,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:08:55,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:08:55,576 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 00:09:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:03,020 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 00:09:03,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:09:03,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-27 00:09:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:03,055 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 00:09:03,055 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 00:09:03,067 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 [2018-10-27 00:09:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 00:09:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 00:09:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 00:09:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 00:09:03,198 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 22 [2018-10-27 00:09:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:03,198 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 00:09:03,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:09:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 00:09:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 00:09:03,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:03,205 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:09:03,205 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:03,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:03,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1272949813, now seen corresponding path program 1 times [2018-10-27 00:09:03,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:03,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:03,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:03,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:03,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:09:03,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:03,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:09:03,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:03,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:09:03,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:09:03,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:09:03,519 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 00:09:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:08,417 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 00:09:08,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:09:08,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-27 00:09:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:08,442 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 00:09:08,442 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 00:09:08,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:09:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 00:09:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 00:09:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 00:09:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 00:09:08,551 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 93 [2018-10-27 00:09:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:08,552 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 00:09:08,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:09:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 00:09:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 00:09:08,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:08,566 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:09:08,566 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:08,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:08,566 INFO L82 PathProgramCache]: Analyzing trace with hash 48893395, now seen corresponding path program 1 times [2018-10-27 00:09:08,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:08,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:08,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:08,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:08,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:09:08,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:08,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:09:08,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:08,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:09:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:09:08,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:09:08,846 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 00:09:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:14,350 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-27 00:09:14,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:09:14,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 00:09:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:14,405 INFO L225 Difference]: With dead ends: 7053 [2018-10-27 00:09:14,405 INFO L226 Difference]: Without dead ends: 4917 [2018-10-27 00:09:14,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:09:14,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-27 00:09:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-27 00:09:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-27 00:09:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-27 00:09:14,605 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 121 [2018-10-27 00:09:14,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:14,608 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-27 00:09:14,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:09:14,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-27 00:09:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 00:09:14,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:14,618 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-10-27 00:09:14,618 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:14,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:14,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1031937393, now seen corresponding path program 1 times [2018-10-27 00:09:14,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:14,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:14,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:14,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:14,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:09:14,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:14,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:09:14,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:14,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:09:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:09:14,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:09:14,901 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-27 00:09:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:17,802 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-27 00:09:17,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:09:17,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 00:09:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:17,851 INFO L225 Difference]: With dead ends: 11909 [2018-10-27 00:09:17,851 INFO L226 Difference]: Without dead ends: 7038 [2018-10-27 00:09:17,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:09:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-27 00:09:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-27 00:09:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-27 00:09:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-27 00:09:18,106 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 139 [2018-10-27 00:09:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:18,107 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-27 00:09:18,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:09:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-27 00:09:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 00:09:18,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:18,110 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:09:18,111 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:18,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash 203002038, now seen corresponding path program 1 times [2018-10-27 00:09:18,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:18,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:18,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:18,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:18,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:18,417 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:09:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:09:18,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:18,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:09:18,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:18,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:09:18,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:09:18,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:09:18,679 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-27 00:09:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:25,458 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-10-27 00:09:25,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:09:25,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-27 00:09:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:25,536 INFO L225 Difference]: With dead ends: 17709 [2018-10-27 00:09:25,536 INFO L226 Difference]: Without dead ends: 10738 [2018-10-27 00:09:25,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:09:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-10-27 00:09:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-10-27 00:09:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-27 00:09:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-27 00:09:25,845 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 186 [2018-10-27 00:09:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:25,846 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-27 00:09:25,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:09:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-27 00:09:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 00:09:25,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:25,851 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:09:25,852 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:25,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash 773533269, now seen corresponding path program 1 times [2018-10-27 00:09:25,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:25,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:25,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:25,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:25,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:09:26,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:09:26,202 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:09:26,203 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 00:09:26,205 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:09:26,293 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:09:26,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:09:29,214 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:09:29,216 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:09:29,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:29,227 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:09:31,065 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-27 00:09:31,065 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:09:31,475 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 00:09:31,476 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:09:31,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:09:31,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 00:09:31,477 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:31,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 00:09:31,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 00:09:31,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:09:31,478 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 8 states. [2018-10-27 00:09:34,714 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:10:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:10:25,559 INFO L93 Difference]: Finished difference Result 21738 states and 29396 transitions. [2018-10-27 00:10:25,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:10:25,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2018-10-27 00:10:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:10:25,601 INFO L225 Difference]: With dead ends: 21738 [2018-10-27 00:10:25,602 INFO L226 Difference]: Without dead ends: 11042 [2018-10-27 00:10:25,634 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 00:10:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11042 states. [2018-10-27 00:10:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11042 to 11040. [2018-10-27 00:10:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11040 states. [2018-10-27 00:10:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 14851 transitions. [2018-10-27 00:10:25,884 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 14851 transitions. Word has length 223 [2018-10-27 00:10:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:10:25,885 INFO L481 AbstractCegarLoop]: Abstraction has 11040 states and 14851 transitions. [2018-10-27 00:10:25,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 00:10:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 14851 transitions. [2018-10-27 00:10:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-27 00:10:25,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:10:25,892 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-27 00:10:25,892 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:10:25,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash -159997069, now seen corresponding path program 1 times [2018-10-27 00:10:25,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:10:25,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:25,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:10:25,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:25,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:10:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:10:26,235 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 00:10:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 117 proven. 116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-27 00:10:26,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:10:26,872 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:10:26,872 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-10-27 00:10:26,873 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:10:26,889 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:10:26,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:10:28,176 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:10:42,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:10:42,436 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:10:42,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:42,444 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:10:45,751 INFO L227 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 79.91% of their original sizes. [2018-10-27 00:10:45,751 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:11:55,873 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-10-27 00:11:55,873 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:11:55,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:11:55,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-27 00:11:55,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:11:55,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 00:11:55,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 00:11:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-10-27 00:11:55,875 INFO L87 Difference]: Start difference. First operand 11040 states and 14851 transitions. Second operand 22 states. Received shutdown request... [2018-10-27 00:12:47,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 00:12:47,100 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:12:47,106 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:12:47,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:12:47 BoogieIcfgContainer [2018-10-27 00:12:47,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:12:47,107 INFO L168 Benchmark]: Toolchain (without parser) took 240215.94 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 24.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 00:12:47,109 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:12:47,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1364.54 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:47,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:47,111 INFO L168 Benchmark]: Boogie Preprocessor took 137.87 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:47,112 INFO L168 Benchmark]: RCFGBuilder took 6267.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.7 MB). Peak memory consumption was 266.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:47,113 INFO L168 Benchmark]: TraceAbstraction took 232129.58 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 524.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 00:12:47,118 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1364.54 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.87 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6267.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.7 MB). Peak memory consumption was 266.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232129.58 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 524.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (11040states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (122 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 232.0s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 133.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 963 SDtfs, 9557 SDslu, 839 SDs, 0 SdLazy, 12334 SolverSat, 4201 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 60.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 592 GetRequests, 426 SyntacticMatches, 100 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 73.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11040occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954405959333766 AbsIntWeakeningRatio, 0.10820895522388059 AbsIntAvgWeakeningVarsNumRemoved, 554.5876865671642 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 165 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1099 NumberOfCodeBlocks, 1099 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1092 ConstructedInterpolants, 0 QuantifiedInterpolants, 1005393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 311/440 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown