java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 17:57:43,934 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 17:57:43,937 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 17:57:43,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 17:57:43,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 17:57:43,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 17:57:43,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 17:57:43,963 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 17:57:43,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 17:57:43,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 17:57:43,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 17:57:43,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 17:57:43,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 17:57:43,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 17:57:43,977 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 17:57:43,978 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 17:57:43,979 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 17:57:43,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 17:57:43,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 17:57:43,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 17:57:43,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 17:57:43,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 17:57:44,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 17:57:44,019 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 17:57:44,019 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 17:57:44,020 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 17:57:44,023 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 17:57:44,023 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 17:57:44,048 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 17:57:44,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 17:57:44,050 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 17:57:44,051 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 17:57:44,051 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 17:57:44,051 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 17:57:44,051 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 17:57:44,051 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 17:57:44,052 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 17:57:44,052 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 17:57:44,052 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 17:57:44,052 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 17:57:44,053 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 17:57:44,053 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 17:57:44,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 17:57:44,055 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 17:57:44,055 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 17:57:44,055 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 17:57:44,055 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 17:57:44,055 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 17:57:44,056 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 17:57:44,056 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 17:57:44,056 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 17:57:44,056 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 17:57:44,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 17:57:44,057 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 17:57:44,057 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 17:57:44,057 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 17:57:44,057 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 17:57:44,057 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 17:57:44,058 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 17:57:44,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 17:57:44,059 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 17:57:44,059 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 17:57:44,059 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 17:57:44,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 17:57:44,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 17:57:44,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 17:57:44,130 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 17:57:44,130 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 17:57:44,132 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c [2018-07-21 17:57:44,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/58a47752d/f205b9fe964148b3a4fadb178587873e/FLAG168fe6375 [2018-07-21 17:57:44,846 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 17:57:44,847 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c [2018-07-21 17:57:44,925 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/58a47752d/f205b9fe964148b3a4fadb178587873e/FLAG168fe6375 [2018-07-21 17:57:44,940 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/58a47752d/f205b9fe964148b3a4fadb178587873e [2018-07-21 17:57:44,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 17:57:44,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 17:57:44,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 17:57:44,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 17:57:44,969 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 17:57:44,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:57:44" (1/1) ... [2018-07-21 17:57:44,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1860e033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:44, skipping insertion in model container [2018-07-21 17:57:44,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:57:44" (1/1) ... [2018-07-21 17:57:45,168 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 17:57:45,492 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:57:45,510 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 17:57:45,730 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:57:45,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45 WrapperNode [2018-07-21 17:57:45,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 17:57:45,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 17:57:45,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 17:57:45,787 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 17:57:45,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:45,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:45,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 17:57:45,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 17:57:45,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 17:57:45,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 17:57:45,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:45,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:45,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:45,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:45,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:46,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:46,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... [2018-07-21 17:57:46,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 17:57:46,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 17:57:46,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 17:57:46,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 17:57:46,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 17:57:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 17:57:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 17:57:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 17:57:46,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 17:57:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 17:57:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 17:57:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 17:57:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 17:57:50,466 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 17:57:50,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:57:50 BoogieIcfgContainer [2018-07-21 17:57:50,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 17:57:50,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 17:57:50,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 17:57:50,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 17:57:50,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:57:44" (1/3) ... [2018-07-21 17:57:50,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27283d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:57:50, skipping insertion in model container [2018-07-21 17:57:50,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:57:45" (2/3) ... [2018-07-21 17:57:50,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27283d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:57:50, skipping insertion in model container [2018-07-21 17:57:50,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:57:50" (3/3) ... [2018-07-21 17:57:50,490 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label48_true-unreach-call_false-termination.c [2018-07-21 17:57:50,502 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 17:57:50,514 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 17:57:50,582 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 17:57:50,583 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 17:57:50,583 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 17:57:50,584 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 17:57:50,584 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 17:57:50,584 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 17:57:50,584 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 17:57:50,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 17:57:50,584 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 17:57:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-21 17:57:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-21 17:57:50,629 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:57:50,630 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:57:50,631 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:57:50,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1554885399, now seen corresponding path program 1 times [2018-07-21 17:57:50,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:57:50,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:50,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:57:50,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:50,694 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:57:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:57:51,113 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:57:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:57:51,142 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:57:51,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 17:57:51,143 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:57:51,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 17:57:51,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 17:57:51,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:57:51,171 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-21 17:57:52,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:57:52,658 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-21 17:57:52,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 17:57:52,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-07-21 17:57:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:57:52,685 INFO L225 Difference]: With dead ends: 691 [2018-07-21 17:57:52,685 INFO L226 Difference]: Without dead ends: 434 [2018-07-21 17:57:52,693 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:57:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-21 17:57:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-21 17:57:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-21 17:57:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 773 transitions. [2018-07-21 17:57:52,784 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 773 transitions. Word has length 45 [2018-07-21 17:57:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:57:52,785 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 773 transitions. [2018-07-21 17:57:52,785 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 17:57:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 773 transitions. [2018-07-21 17:57:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-21 17:57:52,793 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:57:52,793 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 17:57:52,794 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:57:52,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1040211556, now seen corresponding path program 1 times [2018-07-21 17:57:52,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:57:52,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:52,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:57:52,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:52,796 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:57:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:57:53,206 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:57:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:57:53,364 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:57:53,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:57:53,364 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:57:53,367 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:57:53,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:57:53,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:57:53,367 INFO L87 Difference]: Start difference. First operand 434 states and 773 transitions. Second operand 6 states. [2018-07-21 17:57:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:57:56,515 INFO L93 Difference]: Finished difference Result 1234 states and 2253 transitions. [2018-07-21 17:57:56,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:57:56,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-07-21 17:57:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:57:56,527 INFO L225 Difference]: With dead ends: 1234 [2018-07-21 17:57:56,528 INFO L226 Difference]: Without dead ends: 806 [2018-07-21 17:57:56,532 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:57:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-07-21 17:57:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-07-21 17:57:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-21 17:57:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1302 transitions. [2018-07-21 17:57:56,602 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1302 transitions. Word has length 127 [2018-07-21 17:57:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:57:56,603 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1302 transitions. [2018-07-21 17:57:56,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:57:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1302 transitions. [2018-07-21 17:57:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-21 17:57:56,610 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:57:56,610 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 17:57:56,610 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:57:56,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1871635456, now seen corresponding path program 1 times [2018-07-21 17:57:56,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:57:56,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:56,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:57:56,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:56,612 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:57:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:57:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:57:56,840 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:57:56,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 17:57:56,840 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:57:56,840 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 17:57:56,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 17:57:56,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 17:57:56,841 INFO L87 Difference]: Start difference. First operand 797 states and 1302 transitions. Second operand 4 states. [2018-07-21 17:57:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:57:59,382 INFO L93 Difference]: Finished difference Result 3023 states and 5119 transitions. [2018-07-21 17:57:59,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 17:57:59,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-07-21 17:57:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:57:59,401 INFO L225 Difference]: With dead ends: 3023 [2018-07-21 17:57:59,402 INFO L226 Difference]: Without dead ends: 1490 [2018-07-21 17:57:59,412 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 17:57:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2018-07-21 17:57:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1490. [2018-07-21 17:57:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2018-07-21 17:57:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2329 transitions. [2018-07-21 17:57:59,497 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2329 transitions. Word has length 129 [2018-07-21 17:57:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:57:59,499 INFO L471 AbstractCegarLoop]: Abstraction has 1490 states and 2329 transitions. [2018-07-21 17:57:59,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 17:57:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2329 transitions. [2018-07-21 17:57:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-21 17:57:59,504 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:57:59,505 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 17:57:59,505 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:57:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash 970733087, now seen corresponding path program 1 times [2018-07-21 17:57:59,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:57:59,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:59,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:57:59,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:57:59,507 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:57:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:57:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:57:59,719 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:57:59,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 17:57:59,719 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:57:59,720 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 17:57:59,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 17:57:59,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 17:57:59,720 INFO L87 Difference]: Start difference. First operand 1490 states and 2329 transitions. Second operand 5 states. [2018-07-21 17:58:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:58:03,760 INFO L93 Difference]: Finished difference Result 4898 states and 7833 transitions. [2018-07-21 17:58:03,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 17:58:03,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-07-21 17:58:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:58:03,785 INFO L225 Difference]: With dead ends: 4898 [2018-07-21 17:58:03,785 INFO L226 Difference]: Without dead ends: 3414 [2018-07-21 17:58:03,799 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:58:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2018-07-21 17:58:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3324. [2018-07-21 17:58:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3324 states. [2018-07-21 17:58:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 4589 transitions. [2018-07-21 17:58:03,948 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 4589 transitions. Word has length 132 [2018-07-21 17:58:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:58:03,949 INFO L471 AbstractCegarLoop]: Abstraction has 3324 states and 4589 transitions. [2018-07-21 17:58:03,949 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 17:58:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 4589 transitions. [2018-07-21 17:58:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-21 17:58:03,962 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:58:03,963 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:58:03,963 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:58:03,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1881623504, now seen corresponding path program 1 times [2018-07-21 17:58:03,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:58:03,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:58:03,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:58:03,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:58:03,965 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:58:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:58:04,984 WARN L169 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-07-21 17:58:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:58:05,258 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:58:05,258 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:58:05,259 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-07-21 17:58:05,260 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:58:05,337 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:58:05,338 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:58:12,607 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:58:12,811 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:58:12,812 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 17:58:12,857 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:58:22,353 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 77.92% of their original sizes. [2018-07-21 17:58:22,353 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:58:23,463 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:58:23,464 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:58:23,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-07-21 17:58:23,465 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:58:23,466 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 17:58:23,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 17:58:23,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:58:23,466 INFO L87 Difference]: Start difference. First operand 3324 states and 4589 transitions. Second operand 8 states. [2018-07-21 17:59:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:59:30,430 INFO L93 Difference]: Finished difference Result 6827 states and 9406 transitions. [2018-07-21 17:59:30,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 17:59:30,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2018-07-21 17:59:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:59:30,453 INFO L225 Difference]: With dead ends: 6827 [2018-07-21 17:59:30,454 INFO L226 Difference]: Without dead ends: 3509 [2018-07-21 17:59:30,466 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 229 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-21 17:59:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2018-07-21 17:59:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3507. [2018-07-21 17:59:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2018-07-21 17:59:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4780 transitions. [2018-07-21 17:59:30,605 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4780 transitions. Word has length 228 [2018-07-21 17:59:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:59:30,606 INFO L471 AbstractCegarLoop]: Abstraction has 3507 states and 4780 transitions. [2018-07-21 17:59:30,606 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-21 17:59:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4780 transitions. [2018-07-21 17:59:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-21 17:59:30,617 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:59:30,618 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:59:30,618 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:59:30,619 INFO L82 PathProgramCache]: Analyzing trace with hash -979237250, now seen corresponding path program 1 times [2018-07-21 17:59:30,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:59:30,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:59:30,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:59:30,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:59:30,622 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:59:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:59:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 202 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 17:59:31,260 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:59:31,261 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:59:31,261 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-07-21 17:59:31,262 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:59:31,270 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:59:31,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:59:37,024 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:59:39,392 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:59:39,392 INFO L272 AbstractInterpreter]: Visited 105 different actions 206 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 17:59:39,402 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:59:43,565 INFO L232 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 77.8% of their original sizes. [2018-07-21 17:59:43,566 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:59:47,788 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:59:47,789 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:59:47,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 25 [2018-07-21 17:59:47,789 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:59:47,789 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-21 17:59:47,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-21 17:59:47,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-07-21 17:59:47,790 INFO L87 Difference]: Start difference. First operand 3507 states and 4780 transitions. Second operand 15 states. [2018-07-21 18:00:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:00:23,556 INFO L93 Difference]: Finished difference Result 7197 states and 9833 transitions. [2018-07-21 18:00:23,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-21 18:00:23,556 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 313 [2018-07-21 18:00:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:00:23,582 INFO L225 Difference]: With dead ends: 7197 [2018-07-21 18:00:23,583 INFO L226 Difference]: Without dead ends: 3879 [2018-07-21 18:00:23,606 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 321 GetRequests, 239 SyntacticMatches, 60 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-07-21 18:00:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2018-07-21 18:00:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3876. [2018-07-21 18:00:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2018-07-21 18:00:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 5166 transitions. [2018-07-21 18:00:23,742 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 5166 transitions. Word has length 313 [2018-07-21 18:00:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:00:23,743 INFO L471 AbstractCegarLoop]: Abstraction has 3876 states and 5166 transitions. [2018-07-21 18:00:23,743 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-21 18:00:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 5166 transitions. [2018-07-21 18:00:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-21 18:00:23,756 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:00:23,756 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-21 18:00:23,756 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 18:00:23,757 INFO L82 PathProgramCache]: Analyzing trace with hash -4280790, now seen corresponding path program 1 times [2018-07-21 18:00:23,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:00:23,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:00:23,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:00:23,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:00:23,758 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:00:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:00:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 213 proven. 166 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 18:00:24,463 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 18:00:24,463 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 18:00:24,463 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-07-21 18:00:24,463 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 18:00:24,469 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 18:00:24,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 18:00:29,888 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 18:00:34,423 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 18:00:34,423 INFO L272 AbstractInterpreter]: Visited 120 different actions 236 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 18:00:34,431 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 18:00:38,134 INFO L232 lantSequenceWeakener]: Weakened 337 states. On average, predicates are now at 77.76% of their original sizes. [2018-07-21 18:00:38,135 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 18:00:38,509 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 18:00:38,509 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 18:00:38,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2018-07-21 18:00:38,510 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 18:00:38,510 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-21 18:00:38,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-21 18:00:38,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-21 18:00:38,511 INFO L87 Difference]: Start difference. First operand 3876 states and 5166 transitions. Second operand 12 states. [2018-07-21 18:00:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 18:00:58,550 INFO L93 Difference]: Finished difference Result 7382 states and 9988 transitions. [2018-07-21 18:00:58,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-21 18:00:58,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 339 [2018-07-21 18:00:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 18:00:58,572 INFO L225 Difference]: With dead ends: 7382 [2018-07-21 18:00:58,572 INFO L226 Difference]: Without dead ends: 4064 [2018-07-21 18:00:58,583 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 348 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2018-07-21 18:00:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2018-07-21 18:00:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 4061. [2018-07-21 18:00:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2018-07-21 18:00:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5365 transitions. [2018-07-21 18:00:58,712 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5365 transitions. Word has length 339 [2018-07-21 18:00:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 18:00:58,712 INFO L471 AbstractCegarLoop]: Abstraction has 4061 states and 5365 transitions. [2018-07-21 18:00:58,712 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-21 18:00:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5365 transitions. [2018-07-21 18:00:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-21 18:00:58,723 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 18:00:58,723 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-21 18:00:58,723 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 18:00:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1138346898, now seen corresponding path program 1 times [2018-07-21 18:00:58,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 18:00:58,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:00:58,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:00:58,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 18:00:58,724 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 18:00:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:00:59,198 WARN L169 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-07-21 18:00:59,383 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-21 18:00:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 252 proven. 77 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-21 18:00:59,531 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 18:00:59,531 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 18:00:59,532 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-07-21 18:00:59,532 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 18:00:59,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 18:00:59,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 18:01:06,920 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-21 18:01:18,031 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-21 18:01:18,031 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-21 18:01:18,032 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-21 18:01:18,033 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 18:01:18,033 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 18:01:18,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 18:01:18,040 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 18:01:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 18:01:18,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 18:01:18,222 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-21 18:01:18,424 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 18:01:18,424 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 18:01:18,427 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 18:01:18,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 06:01:18 BoogieIcfgContainer [2018-07-21 18:01:18,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 18:01:18,429 INFO L168 Benchmark]: Toolchain (without parser) took 213476.06 ms. Allocated memory was 298.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 243.3 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 702.8 MB. Max. memory is 5.3 GB. [2018-07-21 18:01:18,429 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 298.8 MB. Free memory is still 264.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 18:01:18,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.34 ms. Allocated memory is still 298.8 MB. Free memory was 242.3 MB in the beginning and 197.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 5.3 GB. [2018-07-21 18:01:18,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.85 ms. Allocated memory is still 298.8 MB. Free memory was 197.4 MB in the beginning and 187.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-07-21 18:01:18,431 INFO L168 Benchmark]: Boogie Preprocessor took 135.83 ms. Allocated memory is still 298.8 MB. Free memory was 187.4 MB in the beginning and 181.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 5.3 GB. [2018-07-21 18:01:18,431 INFO L168 Benchmark]: RCFGBuilder took 4412.04 ms. Allocated memory was 298.8 MB in the beginning and 440.4 MB in the end (delta: 141.6 MB). Free memory was 181.2 MB in the beginning and 267.8 MB in the end (delta: -86.6 MB). Peak memory consumption was 71.2 MB. Max. memory is 5.3 GB. [2018-07-21 18:01:18,432 INFO L168 Benchmark]: TraceAbstraction took 207950.63 ms. Allocated memory was 440.4 MB in the beginning and 2.5 GB in the end (delta: 2.1 GB). Free memory was 267.8 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 585.7 MB. Max. memory is 5.3 GB. [2018-07-21 18:01:18,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 298.8 MB. Free memory is still 264.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 825.34 ms. Allocated memory is still 298.8 MB. Free memory was 242.3 MB in the beginning and 197.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 131.85 ms. Allocated memory is still 298.8 MB. Free memory was 197.4 MB in the beginning and 187.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 135.83 ms. Allocated memory is still 298.8 MB. Free memory was 187.4 MB in the beginning and 181.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 4412.04 ms. Allocated memory was 298.8 MB in the beginning and 440.4 MB in the end (delta: 141.6 MB). Free memory was 181.2 MB in the beginning and 267.8 MB in the end (delta: -86.6 MB). Peak memory consumption was 71.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 207950.63 ms. Allocated memory was 440.4 MB in the beginning and 2.5 GB in the end (delta: 2.1 GB). Free memory was 267.8 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 585.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was analyzing trace of length 354 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 134.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 947 SDtfs, 5231 SDslu, 1228 SDs, 0 SdLazy, 9067 SolverSat, 1608 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 928 GetRequests, 799 SyntacticMatches, 63 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4061occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 44.2s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9955773965924676 AbsIntWeakeningRatio, 0.10262257696693272 AbsIntAvgWeakeningVarsNumRemoved, 66.10946408209806 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 107 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1313 NumberOfCodeBlocks, 1313 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1306 ConstructedInterpolants, 0 QuantifiedInterpolants, 3387970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 700/1032 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label48_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_18-01-18-446.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label48_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_18-01-18-446.csv Completed graceful shutdown