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/Problem18_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 20:22:52,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 20:22:52,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 20:22:52,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 20:22:52,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 20:22:52,891 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 20:22:52,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 20:22:52,899 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 20:22:52,903 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 20:22:52,904 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 20:22:52,905 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 20:22:52,905 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 20:22:52,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 20:22:52,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 20:22:52,909 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 20:22:52,910 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 20:22:52,914 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 20:22:52,916 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 20:22:52,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 20:22:52,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 20:22:52,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 20:22:52,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 20:22:52,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 20:22:52,949 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 20:22:52,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 20:22:52,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 20:22:52,977 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 20:22:52,978 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 20:22:52,978 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 20:22:52,978 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 20:22:52,978 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 20:22:52,978 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 20:22:52,978 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 20:22:52,979 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 20:22:52,979 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 20:22:52,979 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 20:22:52,980 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 20:22:52,980 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 20:22:52,980 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 20:22:52,980 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 20:22:52,980 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 20:22:52,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 20:22:52,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 20:22:52,984 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 20:22:52,984 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 20:22:52,984 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 20:22:52,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 20:22:52,984 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 20:22:52,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 20:22:52,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 20:22:52,985 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 20:22:52,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 20:22:52,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 20:22:52,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 20:22:52,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 20:22:52,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 20:22:52,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 20:22:52,986 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 20:22:52,986 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 20:22:53,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 20:22:53,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 20:22:53,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 20:22:53,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 20:22:53,060 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 20:22:53,061 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c [2018-07-21 20:22:53,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/5caf9920a/60fd668eddda4f1db3c3828c87fce6e1/FLAGc57fa4700 [2018-07-21 20:22:53,976 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 20:22:53,977 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c [2018-07-21 20:22:54,029 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/5caf9920a/60fd668eddda4f1db3c3828c87fce6e1/FLAGc57fa4700 [2018-07-21 20:22:54,051 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/5caf9920a/60fd668eddda4f1db3c3828c87fce6e1 [2018-07-21 20:22:54,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 20:22:54,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 20:22:54,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 20:22:54,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 20:22:54,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 20:22:54,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:22:54" (1/1) ... [2018-07-21 20:22:54,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5fd596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:54, skipping insertion in model container [2018-07-21 20:22:54,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:22:54" (1/1) ... [2018-07-21 20:22:54,438 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 20:22:55,406 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 20:22:55,426 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 20:22:56,071 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 20:22:56,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56 WrapperNode [2018-07-21 20:22:56,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 20:22:56,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 20:22:56,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 20:22:56,218 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 20:22:56,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:56,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:56,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 20:22:56,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 20:22:56,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 20:22:56,505 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 20:22:56,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:56,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:56,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:56,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:56,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:57,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:57,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (1/1) ... [2018-07-21 20:22:57,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 20:22:57,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 20:22:57,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 20:22:57,244 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 20:22:57,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (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 20:22:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 20:22:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 20:22:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 20:22:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 20:22:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 20:22:57,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 20:22:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 20:22:57,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 20:22:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 20:22:57,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 20:22:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 20:22:57,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 20:23:06,492 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 20:23:06,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:23:06 BoogieIcfgContainer [2018-07-21 20:23:06,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 20:23:06,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 20:23:06,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 20:23:06,497 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 20:23:06,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:22:54" (1/3) ... [2018-07-21 20:23:06,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ecbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:23:06, skipping insertion in model container [2018-07-21 20:23:06,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:56" (2/3) ... [2018-07-21 20:23:06,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ecbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:23:06, skipping insertion in model container [2018-07-21 20:23:06,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:23:06" (3/3) ... [2018-07-21 20:23:06,501 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label21_true-unreach-call.c [2018-07-21 20:23:06,511 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 20:23:06,526 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 20:23:06,595 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 20:23:06,596 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 20:23:06,596 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 20:23:06,596 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 20:23:06,596 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 20:23:06,596 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 20:23:06,596 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 20:23:06,596 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 20:23:06,596 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 20:23:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-21 20:23:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-21 20:23:06,664 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:06,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:23:06,665 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1739686425, now seen corresponding path program 1 times [2018-07-21 20:23:06,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:06,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:06,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:06,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:06,726 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:07,185 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 20:23:07,299 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 20:23:07,301 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:23:07,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 20:23:07,302 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:07,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 20:23:07,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 20:23:07,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 20:23:07,324 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-21 20:23:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:23:12,428 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-21 20:23:12,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 20:23:12,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-07-21 20:23:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:23:12,482 INFO L225 Difference]: With dead ends: 2251 [2018-07-21 20:23:12,482 INFO L226 Difference]: Without dead ends: 1474 [2018-07-21 20:23:12,498 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 20:23:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-21 20:23:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-21 20:23:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-21 20:23:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-21 20:23:12,675 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 65 [2018-07-21 20:23:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:23:12,676 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-21 20:23:12,676 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 20:23:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-21 20:23:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-21 20:23:12,685 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:12,685 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, 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] [2018-07-21 20:23:12,685 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2114139012, now seen corresponding path program 1 times [2018-07-21 20:23:12,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:12,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:12,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:12,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:12,688 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:23:12,890 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:23:12,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 20:23:12,891 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:12,893 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 20:23:12,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 20:23:12,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 20:23:12,893 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-07-21 20:23:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:23:25,470 INFO L93 Difference]: Finished difference Result 5825 states and 10916 transitions. [2018-07-21 20:23:25,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 20:23:25,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-07-21 20:23:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:23:25,508 INFO L225 Difference]: With dead ends: 5825 [2018-07-21 20:23:25,508 INFO L226 Difference]: Without dead ends: 4357 [2018-07-21 20:23:25,518 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-21 20:23:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2018-07-21 20:23:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4318. [2018-07-21 20:23:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4318 states. [2018-07-21 20:23:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 7002 transitions. [2018-07-21 20:23:25,716 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 7002 transitions. Word has length 137 [2018-07-21 20:23:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:23:25,716 INFO L471 AbstractCegarLoop]: Abstraction has 4318 states and 7002 transitions. [2018-07-21 20:23:25,716 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 20:23:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 7002 transitions. [2018-07-21 20:23:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-21 20:23:25,737 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:25,737 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, 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] [2018-07-21 20:23:25,737 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:25,737 INFO L82 PathProgramCache]: Analyzing trace with hash -455753195, now seen corresponding path program 1 times [2018-07-21 20:23:25,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:25,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:25,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:25,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:25,739 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:23:26,073 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:23:26,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:23:26,074 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:26,074 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:23:26,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:23:26,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:23:26,075 INFO L87 Difference]: Start difference. First operand 4318 states and 7002 transitions. Second operand 6 states. [2018-07-21 20:23:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:23:32,300 INFO L93 Difference]: Finished difference Result 12314 states and 19987 transitions. [2018-07-21 20:23:32,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:23:32,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-07-21 20:23:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:23:32,353 INFO L225 Difference]: With dead ends: 12314 [2018-07-21 20:23:32,353 INFO L226 Difference]: Without dead ends: 8002 [2018-07-21 20:23:32,372 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 20:23:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2018-07-21 20:23:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7925. [2018-07-21 20:23:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7925 states. [2018-07-21 20:23:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 11288 transitions. [2018-07-21 20:23:32,718 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 11288 transitions. Word has length 160 [2018-07-21 20:23:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:23:32,718 INFO L471 AbstractCegarLoop]: Abstraction has 7925 states and 11288 transitions. [2018-07-21 20:23:32,718 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:23:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 11288 transitions. [2018-07-21 20:23:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-21 20:23:32,726 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:32,726 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:23:32,726 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash 895963408, now seen corresponding path program 1 times [2018-07-21 20:23:32,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:32,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:32,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:32,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:32,729 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:33,120 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 20:23:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:23:33,251 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:23:33,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:23:33,251 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:33,252 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:23:33,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:23:33,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:23:33,252 INFO L87 Difference]: Start difference. First operand 7925 states and 11288 transitions. Second operand 6 states. [2018-07-21 20:23:37,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:23:37,597 INFO L93 Difference]: Finished difference Result 20452 states and 30367 transitions. [2018-07-21 20:23:37,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:23:37,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-07-21 20:23:37,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:23:37,680 INFO L225 Difference]: With dead ends: 20452 [2018-07-21 20:23:37,680 INFO L226 Difference]: Without dead ends: 12533 [2018-07-21 20:23:37,701 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 20:23:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2018-07-21 20:23:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12418. [2018-07-21 20:23:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12418 states. [2018-07-21 20:23:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12418 states to 12418 states and 17366 transitions. [2018-07-21 20:23:38,042 INFO L78 Accepts]: Start accepts. Automaton has 12418 states and 17366 transitions. Word has length 195 [2018-07-21 20:23:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:23:38,043 INFO L471 AbstractCegarLoop]: Abstraction has 12418 states and 17366 transitions. [2018-07-21 20:23:38,043 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:23:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12418 states and 17366 transitions. [2018-07-21 20:23:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-21 20:23:38,052 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:38,053 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:38,053 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash 973249026, now seen corresponding path program 1 times [2018-07-21 20:23:38,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:38,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:38,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:38,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:38,055 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:23:38,368 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 20:23:38,368 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 20:23:38,369 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-07-21 20:23:38,371 INFO L201 CegarAbsIntRunner]: [0], [1], [743], [747], [753], [757], [759], [1648], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2067], [2069], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2148], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2288], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-21 20:23:38,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 20:23:38,465 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 20:23:49,458 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 20:23:49,460 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 20:23:49,470 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 20:23:58,949 INFO L232 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 78.26% of their original sizes. [2018-07-21 20:23:58,950 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 20:23:59,589 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 20:23:59,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 20:23:59,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-07-21 20:23:59,591 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:59,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-21 20:23:59,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-21 20:23:59,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-21 20:23:59,592 INFO L87 Difference]: Start difference. First operand 12418 states and 17366 transitions. Second operand 7 states. [2018-07-21 20:24:10,176 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 20:25:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:25:47,853 INFO L93 Difference]: Finished difference Result 25535 states and 35568 transitions. [2018-07-21 20:25:47,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:25:47,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2018-07-21 20:25:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:25:47,899 INFO L225 Difference]: With dead ends: 25535 [2018-07-21 20:25:47,899 INFO L226 Difference]: Without dead ends: 13123 [2018-07-21 20:25:47,927 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-21 20:25:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13123 states. [2018-07-21 20:25:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13123 to 13121. [2018-07-21 20:25:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13121 states. [2018-07-21 20:25:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13121 states to 13121 states and 18078 transitions. [2018-07-21 20:25:48,238 INFO L78 Accepts]: Start accepts. Automaton has 13121 states and 18078 transitions. Word has length 244 [2018-07-21 20:25:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:25:48,239 INFO L471 AbstractCegarLoop]: Abstraction has 13121 states and 18078 transitions. [2018-07-21 20:25:48,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-21 20:25:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 13121 states and 18078 transitions. [2018-07-21 20:25:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-21 20:25:48,252 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:25:48,252 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:25:48,252 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:25:48,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1587550948, now seen corresponding path program 1 times [2018-07-21 20:25:48,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:25:48,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:25:48,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:25:48,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:25:48,254 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:25:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:25:48,836 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-21 20:25:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 233 proven. 187 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 20:25:49,552 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 20:25:49,553 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 20:25:49,553 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 432 with the following transitions: [2018-07-21 20:25:49,555 INFO L201 CegarAbsIntRunner]: [0], [1], [743], [747], [753], [757], [759], [1648], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2067], [2069], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2148], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2288], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2608], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-21 20:25:49,573 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 20:25:49,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-21 20:26:02,826 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-21 20:26:02,827 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-21 20:26:02,828 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-21 20:26:02,828 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 20:26:02,828 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 20:26:02,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:26:02,836 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 20:26:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:26:03,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 20:26:03,077 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-21 20:26:03,278 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 20:26:03,279 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 20:26:03,282 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 20:26:03,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:26:03 BoogieIcfgContainer [2018-07-21 20:26:03,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 20:26:03,284 INFO L168 Benchmark]: Toolchain (without parser) took 189220.11 ms. Allocated memory was 304.6 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 240.1 MB in the beginning and 1.1 GB in the end (delta: -884.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-07-21 20:26:03,285 INFO L168 Benchmark]: CDTParser took 1.44 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 20:26:03,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2146.93 ms. Allocated memory was 304.6 MB in the beginning and 336.1 MB in the end (delta: 31.5 MB). Free memory was 239.1 MB in the beginning and 179.5 MB in the end (delta: 59.7 MB). Peak memory consumption was 91.1 MB. Max. memory is 5.3 GB. [2018-07-21 20:26:03,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 286.53 ms. Allocated memory was 336.1 MB in the beginning and 395.3 MB in the end (delta: 59.2 MB). Free memory was 179.5 MB in the beginning and 326.8 MB in the end (delta: -147.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 5.3 GB. [2018-07-21 20:26:03,287 INFO L168 Benchmark]: Boogie Preprocessor took 738.69 ms. Allocated memory was 395.3 MB in the beginning and 532.2 MB in the end (delta: 136.8 MB). Free memory was 326.8 MB in the beginning and 464.1 MB in the end (delta: -137.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 5.3 GB. [2018-07-21 20:26:03,288 INFO L168 Benchmark]: RCFGBuilder took 9248.58 ms. Allocated memory was 532.2 MB in the beginning and 643.8 MB in the end (delta: 111.7 MB). Free memory was 464.1 MB in the beginning and 414.1 MB in the end (delta: 50.0 MB). Peak memory consumption was 207.4 MB. Max. memory is 5.3 GB. [2018-07-21 20:26:03,288 INFO L168 Benchmark]: TraceAbstraction took 176789.65 ms. Allocated memory was 643.8 MB in the beginning and 2.5 GB in the end (delta: 1.9 GB). Free memory was 414.1 MB in the beginning and 1.1 GB in the end (delta: -710.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-07-21 20:26:03,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2146.93 ms. Allocated memory was 304.6 MB in the beginning and 336.1 MB in the end (delta: 31.5 MB). Free memory was 239.1 MB in the beginning and 179.5 MB in the end (delta: 59.7 MB). Peak memory consumption was 91.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 286.53 ms. Allocated memory was 336.1 MB in the beginning and 395.3 MB in the end (delta: 59.2 MB). Free memory was 179.5 MB in the beginning and 326.8 MB in the end (delta: -147.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 738.69 ms. Allocated memory was 395.3 MB in the beginning and 532.2 MB in the end (delta: 136.8 MB). Free memory was 326.8 MB in the beginning and 464.1 MB in the end (delta: -137.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 9248.58 ms. Allocated memory was 532.2 MB in the beginning and 643.8 MB in the end (delta: 111.7 MB). Free memory was 464.1 MB in the beginning and 414.1 MB in the end (delta: 50.0 MB). Peak memory consumption was 207.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 176789.65 ms. Allocated memory was 643.8 MB in the beginning and 2.5 GB in the end (delta: 1.9 GB). Free memory was 414.1 MB in the beginning and 1.1 GB in the end (delta: -710.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was analyzing trace of length 432 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 176.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 136.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1316 SDtfs, 12422 SDslu, 659 SDs, 0 SdLazy, 20077 SolverSat, 5766 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 278 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13121occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.3s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.995847498061669 AbsIntWeakeningRatio, 0.10699588477366255 AbsIntAvgWeakeningVarsNumRemoved, 30.76954732510288 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 233 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 801 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 796 ConstructedInterpolants, 0 QuantifiedInterpolants, 423398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 360/362 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/Problem18_label21_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_20-26-03-306.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem18_label21_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_20-26-03-306.csv Completed graceful shutdown