java -Xmx8000000000 -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 csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:37:30,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:37:30,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:37:30,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:37:30,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:37:30,837 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:37:30,838 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:37:30,840 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:37:30,843 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:37:30,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:37:30,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:37:30,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:37:30,848 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:37:30,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:37:30,850 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:37:30,851 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:37:30,851 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:37:30,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:37:30,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:37:30,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:37:30,858 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:37:30,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:37:30,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 19:37:30,870 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 19:37:30,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:37:30,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:37:30,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:37:30,899 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:37:30,899 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:37:30,900 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:37:30,900 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:37:30,901 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:37:30,901 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:37:30,901 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:37:30,901 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:37:30,902 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:37:30,902 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:37:30,902 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:37:30,903 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:37:30,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:37:30,903 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:37:30,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:37:30,903 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:37:30,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:37:30,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:37:30,904 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:37:30,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:37:30,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:37:30,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:37:30,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:37:30,905 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:37:30,905 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:37:30,906 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:37:30,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:37:30,906 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:37:30,906 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:37:30,906 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:37:30,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:37:30,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:37:30,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:37:30,985 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:37:30,985 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:37:30,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c [2018-07-23 19:37:31,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373e5da2a/3bfda8c060354d0482c0ad407c92ca76/FLAG7c78a1cc0 [2018-07-23 19:37:31,756 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:37:31,759 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label37_false-unreach-call_false-termination.c [2018-07-23 19:37:31,783 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373e5da2a/3bfda8c060354d0482c0ad407c92ca76/FLAG7c78a1cc0 [2018-07-23 19:37:31,808 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373e5da2a/3bfda8c060354d0482c0ad407c92ca76 [2018-07-23 19:37:31,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:37:31,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:37:31,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:37:31,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:37:31,837 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:37:31,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:37:31" (1/1) ... [2018-07-23 19:37:31,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22224105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:31, skipping insertion in model container [2018-07-23 19:37:31,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:37:31" (1/1) ... [2018-07-23 19:37:32,111 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:37:32,537 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:37:32,560 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:37:32,705 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:37:32,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32 WrapperNode [2018-07-23 19:37:32,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:37:32,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:37:32,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:37:32,771 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:37:32,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:32,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:32,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:37:32,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:37:32,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:37:32,914 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:37:33,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... [2018-07-23 19:37:33,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:37:33,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:37:33,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:37:33,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:37:33,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (1/1) ... No working directory specified, using /storage/repos/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 [2018-07-23 19:37:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:37:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:37:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:37:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:37:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:37:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:37:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 19:37:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 19:37:37,590 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:37:37,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:37:37 BoogieIcfgContainer [2018-07-23 19:37:37,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:37:37,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:37:37,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:37:37,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:37:37,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:37:31" (1/3) ... [2018-07-23 19:37:37,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da71df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:37:37, skipping insertion in model container [2018-07-23 19:37:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:37:32" (2/3) ... [2018-07-23 19:37:37,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da71df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:37:37, skipping insertion in model container [2018-07-23 19:37:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:37:37" (3/3) ... [2018-07-23 19:37:37,607 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label37_false-unreach-call_false-termination.c [2018-07-23 19:37:37,616 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:37:37,625 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:37:37,684 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:37:37,685 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:37:37,685 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:37:37,685 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:37:37,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:37:37,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:37:37,686 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:37:37,686 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:37:37,686 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:37:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 19:37:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 19:37:37,720 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:37,724 INFO L353 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] [2018-07-23 19:37:37,725 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:37,731 INFO L82 PathProgramCache]: Analyzing trace with hash -273211087, now seen corresponding path program 1 times [2018-07-23 19:37:37,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:37,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:37,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:37,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:37,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:38,162 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:37:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:37:38,277 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:37:38,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:37:38,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:37:38,284 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:37:38,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:37:38,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:37:38,303 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-23 19:37:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:37:40,437 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-23 19:37:40,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:37:40,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-07-23 19:37:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:37:40,465 INFO L225 Difference]: With dead ends: 691 [2018-07-23 19:37:40,466 INFO L226 Difference]: Without dead ends: 434 [2018-07-23 19:37:40,474 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:37:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-23 19:37:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-23 19:37:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-23 19:37:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-07-23 19:37:40,562 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 25 [2018-07-23 19:37:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:37:40,562 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-07-23 19:37:40,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:37:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-07-23 19:37:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 19:37:40,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:40,569 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:37:40,569 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:40,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1786127607, now seen corresponding path program 1 times [2018-07-23 19:37:40,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:40,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:40,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:40,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:40,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:37:40,887 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:37:40,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:37:40,888 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:37:40,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:37:40,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:37:40,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:37:40,891 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-07-23 19:37:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:37:43,442 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-07-23 19:37:43,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:37:43,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-07-23 19:37:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:37:43,452 INFO L225 Difference]: With dead ends: 1062 [2018-07-23 19:37:43,452 INFO L226 Difference]: Without dead ends: 634 [2018-07-23 19:37:43,455 INFO L573 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 [2018-07-23 19:37:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-07-23 19:37:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-07-23 19:37:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-07-23 19:37:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-07-23 19:37:43,499 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 100 [2018-07-23 19:37:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:37:43,499 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-07-23 19:37:43,500 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:37:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-07-23 19:37:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-23 19:37:43,504 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:43,505 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:37:43,505 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:43,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1567334728, now seen corresponding path program 1 times [2018-07-23 19:37:43,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:43,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:43,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:43,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:43,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:37:43,725 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:37:43,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:37:43,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:37:43,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:37:43,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:37:43,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:37:43,727 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-07-23 19:37:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:37:48,052 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-07-23 19:37:48,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:37:48,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-07-23 19:37:48,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:37:48,077 INFO L225 Difference]: With dead ends: 2350 [2018-07-23 19:37:48,077 INFO L226 Difference]: Without dead ends: 1731 [2018-07-23 19:37:48,083 INFO L573 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 [2018-07-23 19:37:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-07-23 19:37:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-07-23 19:37:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-07-23 19:37:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-07-23 19:37:48,145 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 109 [2018-07-23 19:37:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:37:48,145 INFO L471 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-07-23 19:37:48,146 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:37:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-07-23 19:37:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-23 19:37:48,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:48,164 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:37:48,164 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:48,164 INFO L82 PathProgramCache]: Analyzing trace with hash -775294671, now seen corresponding path program 1 times [2018-07-23 19:37:48,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:48,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:48,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:48,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:48,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-23 19:37:48,538 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:37:48,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:37:48,538 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:37:48,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:37:48,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:37:48,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:37:48,540 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 4 states. [2018-07-23 19:37:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:37:51,195 INFO L93 Difference]: Finished difference Result 6215 states and 9785 transitions. [2018-07-23 19:37:51,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:37:51,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-07-23 19:37:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:37:51,239 INFO L225 Difference]: With dead ends: 6215 [2018-07-23 19:37:51,239 INFO L226 Difference]: Without dead ends: 4490 [2018-07-23 19:37:51,266 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:37:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2018-07-23 19:37:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4490. [2018-07-23 19:37:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4490 states. [2018-07-23 19:37:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6614 transitions. [2018-07-23 19:37:51,450 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6614 transitions. Word has length 219 [2018-07-23 19:37:51,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:37:51,452 INFO L471 AbstractCegarLoop]: Abstraction has 4490 states and 6614 transitions. [2018-07-23 19:37:51,452 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:37:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6614 transitions. [2018-07-23 19:37:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-23 19:37:51,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:51,477 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:37:51,477 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:51,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1480051699, now seen corresponding path program 1 times [2018-07-23 19:37:51,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:51,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:51,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:51,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:51,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:52,108 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-07-23 19:37:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 36 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:37:52,603 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:37:52,603 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:37:52,605 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-07-23 19:37:52,607 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [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], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [810], [972], [973], [974], [975], [977], [978] [2018-07-23 19:37:52,681 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:37:52,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:38:02,206 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:38:02,207 INFO L272 AbstractInterpreter]: Visited 148 different actions 148 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 19:38:02,220 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:38:09,049 INFO L232 lantSequenceWeakener]: Weakened 273 states. On average, predicates are now at 77.46% of their original sizes. [2018-07-23 19:38:09,050 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:38:09,516 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:38:09,517 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:38:09,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 19:38:09,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:38:09,519 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:38:09,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:38:09,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:38:09,520 INFO L87 Difference]: Start difference. First operand 4490 states and 6614 transitions. Second operand 7 states. [2018-07-23 19:38:23,253 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:38:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:38:47,196 INFO L93 Difference]: Finished difference Result 9159 states and 13470 transitions. [2018-07-23 19:38:47,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:38:47,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2018-07-23 19:38:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:38:47,222 INFO L225 Difference]: With dead ends: 9159 [2018-07-23 19:38:47,222 INFO L226 Difference]: Without dead ends: 4675 [2018-07-23 19:38:47,251 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:38:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-07-23 19:38:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4673. [2018-07-23 19:38:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2018-07-23 19:38:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6805 transitions. [2018-07-23 19:38:47,388 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6805 transitions. Word has length 281 [2018-07-23 19:38:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:38:47,388 INFO L471 AbstractCegarLoop]: Abstraction has 4673 states and 6805 transitions. [2018-07-23 19:38:47,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:38:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6805 transitions. [2018-07-23 19:38:47,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-23 19:38:47,408 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:38:47,408 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:38:47,409 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:38:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1892776327, now seen corresponding path program 1 times [2018-07-23 19:38:47,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:38:47,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:38:47,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:38:47,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:38:47,411 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:38:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:38:48,043 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-23 19:38:48,284 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 19:38:48,677 WARN L169 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-07-23 19:38:49,156 WARN L169 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-23 19:38:49,823 WARN L169 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-23 19:38:50,466 WARN L169 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-07-23 19:38:50,690 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-23 19:38:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 142 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:38:51,117 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:38:51,118 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:38:51,118 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-07-23 19:38:51,119 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [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], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [810], [972], [973], [974], [975], [977], [978] [2018-07-23 19:38:51,127 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:38:51,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:39:14,267 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:39:14,267 INFO L272 AbstractInterpreter]: Visited 152 different actions 297 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 19:39:14,276 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:39:26,324 INFO L232 lantSequenceWeakener]: Weakened 364 states. On average, predicates are now at 77.48% of their original sizes. [2018-07-23 19:39:26,324 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:39:27,796 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:39:27,796 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:39:27,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2018-07-23 19:39:27,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:39:27,798 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:39:27,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:39:27,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:39:27,798 INFO L87 Difference]: Start difference. First operand 4673 states and 6805 transitions. Second operand 11 states. [2018-07-23 19:40:06,178 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:40:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:40:27,208 INFO L93 Difference]: Finished difference Result 9529 states and 13911 transitions. [2018-07-23 19:40:27,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:40:27,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 366 [2018-07-23 19:40:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:40:27,238 INFO L225 Difference]: With dead ends: 9529 [2018-07-23 19:40:27,239 INFO L226 Difference]: Without dead ends: 5045 [2018-07-23 19:40:27,269 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 372 GetRequests, 343 SyntacticMatches, 13 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 19:40:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2018-07-23 19:40:27,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 5042. [2018-07-23 19:40:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5042 states. [2018-07-23 19:40:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 7191 transitions. [2018-07-23 19:40:27,413 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 7191 transitions. Word has length 366 [2018-07-23 19:40:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:40:27,413 INFO L471 AbstractCegarLoop]: Abstraction has 5042 states and 7191 transitions. [2018-07-23 19:40:27,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:40:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 7191 transitions. [2018-07-23 19:40:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-23 19:40:27,442 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:40:27,442 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:40:27,442 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:40:27,443 INFO L82 PathProgramCache]: Analyzing trace with hash -929362853, now seen corresponding path program 1 times [2018-07-23 19:40:27,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:40:27,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:40:27,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:40:27,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:40:27,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:40:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:40:28,378 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-07-23 19:40:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 67 proven. 317 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:40:28,861 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:40:28,861 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:40:28,861 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-07-23 19:40:28,861 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [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], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [682], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [810], [972], [973], [974], [975], [977], [978] [2018-07-23 19:40:28,867 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:40:28,867 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:41:02,905 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:41:02,906 INFO L272 AbstractInterpreter]: Visited 152 different actions 298 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 19:41:02,916 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown