java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 13:00:53,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 13:00:53,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 13:00:53,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 13:00:53,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 13:00:53,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 13:00:53,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 13:00:53,960 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 13:00:53,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 13:00:53,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 13:00:53,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 13:00:53,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 13:00:53,965 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 13:00:53,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 13:00:53,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 13:00:53,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 13:00:53,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 13:00:53,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 13:00:53,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 13:00:53,974 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 13:00:53,975 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 13:00:53,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 13:00:53,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-08-07 13:00:53,992 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 13:00:53,992 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 13:00:53,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 13:00:53,994 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 13:00:53,994 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 13:00:54,027 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 13:00:54,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 13:00:54,028 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 13:00:54,031 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 13:00:54,032 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 13:00:54,032 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 13:00:54,032 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 13:00:54,032 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 13:00:54,032 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 13:00:54,033 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 13:00:54,033 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 13:00:54,034 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 13:00:54,034 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 13:00:54,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 13:00:54,034 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 13:00:54,036 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 13:00:54,036 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 13:00:54,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 13:00:54,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 13:00:54,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 13:00:54,037 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 13:00:54,037 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 13:00:54,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 13:00:54,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 13:00:54,038 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 13:00:54,038 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 13:00:54,038 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 13:00:54,039 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 13:00:54,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 13:00:54,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 13:00:54,039 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 13:00:54,039 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 13:00:54,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 13:00:54,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 13:00:54,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 13:00:54,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 13:00:54,120 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 13:00:54,120 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 13:00:54,121 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-08-07 13:00:54,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfff9f582/af86ab4157694b709cb452b451fa1325/FLAG0d922b633 [2018-08-07 13:00:54,872 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 13:00:54,874 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-08-07 13:00:54,907 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfff9f582/af86ab4157694b709cb452b451fa1325/FLAG0d922b633 [2018-08-07 13:00:54,924 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfff9f582/af86ab4157694b709cb452b451fa1325 [2018-08-07 13:00:54,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 13:00:54,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 13:00:54,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 13:00:54,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 13:00:54,946 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 13:00:54,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 01:00:54" (1/1) ... [2018-08-07 13:00:54,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90a6c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:54, skipping insertion in model container [2018-08-07 13:00:54,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 01:00:54" (1/1) ... [2018-08-07 13:00:55,261 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 13:00:56,014 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 13:00:56,034 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 13:00:56,499 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 13:00:56,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56 WrapperNode [2018-08-07 13:00:56,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 13:00:56,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 13:00:56,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 13:00:56,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 13:00:56,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:56,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 13:00:57,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 13:00:57,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 13:00:57,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 13:00:57,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (1/1) ... [2018-08-07 13:00:57,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 13:00:57,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 13:00:57,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 13:00:57,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 13:00:57,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (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 [2018-08-07 13:00:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 13:00:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 13:00:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 13:00:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 13:00:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 13:00:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 13:00:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 13:00:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 13:00:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 13:00:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 13:01:10,308 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 13:01:10,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 01:01:10 BoogieIcfgContainer [2018-08-07 13:01:10,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 13:01:10,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 13:01:10,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 13:01:10,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 13:01:10,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 01:00:54" (1/3) ... [2018-08-07 13:01:10,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8691c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 01:01:10, skipping insertion in model container [2018-08-07 13:01:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:00:56" (2/3) ... [2018-08-07 13:01:10,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8691c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 01:01:10, skipping insertion in model container [2018-08-07 13:01:10,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 01:01:10" (3/3) ... [2018-08-07 13:01:10,321 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label14_true-unreach-call.c [2018-08-07 13:01:10,330 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 13:01:10,338 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 13:01:10,393 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 13:01:10,394 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 13:01:10,394 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 13:01:10,395 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 13:01:10,395 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 13:01:10,395 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 13:01:10,395 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 13:01:10,395 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 13:01:10,395 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 13:01:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-08-07 13:01:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-08-07 13:01:10,453 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:01:10,454 INFO L376 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] [2018-08-07 13:01:10,456 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:01:10,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1123343652, now seen corresponding path program 1 times [2018-08-07 13:01:10,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:01:10,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:10,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:10,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:10,520 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:01:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:11,007 WARN L170 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-08-07 13:01:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:01:11,029 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:01:11,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 13:01:11,030 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:01:11,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 13:01:11,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 13:01:11,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:01:11,055 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-08-07 13:01:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:01:21,387 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-08-07 13:01:21,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 13:01:21,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-08-07 13:01:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:01:21,422 INFO L225 Difference]: With dead ends: 2162 [2018-08-07 13:01:21,422 INFO L226 Difference]: Without dead ends: 1552 [2018-08-07 13:01:21,435 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:01:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-08-07 13:01:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-08-07 13:01:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-08-07 13:01:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-08-07 13:01:21,591 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 54 [2018-08-07 13:01:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:01:21,592 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-08-07 13:01:21,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 13:01:21,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-08-07 13:01:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-08-07 13:01:21,611 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:01:21,611 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:01:21,612 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:01:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash 475560493, now seen corresponding path program 1 times [2018-08-07 13:01:21,613 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:01:21,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:21,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:21,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:21,616 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:01:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:21,930 WARN L170 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:01:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:01:22,039 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:01:22,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 13:01:22,039 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:01:22,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:01:22,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:01:22,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:01:22,043 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-08-07 13:01:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:01:33,186 INFO L93 Difference]: Finished difference Result 4431 states and 8042 transitions. [2018-08-07 13:01:33,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 13:01:33,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-08-07 13:01:33,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:01:33,222 INFO L225 Difference]: With dead ends: 4431 [2018-08-07 13:01:33,222 INFO L226 Difference]: Without dead ends: 2912 [2018-08-07 13:01:33,230 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 13:01:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-08-07 13:01:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2878. [2018-08-07 13:01:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2018-08-07 13:01:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4713 transitions. [2018-08-07 13:01:33,346 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4713 transitions. Word has length 133 [2018-08-07 13:01:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:01:33,346 INFO L480 AbstractCegarLoop]: Abstraction has 2878 states and 4713 transitions. [2018-08-07 13:01:33,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:01:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4713 transitions. [2018-08-07 13:01:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-08-07 13:01:33,355 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:01:33,359 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:01:33,359 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:01:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1950244094, now seen corresponding path program 1 times [2018-08-07 13:01:33,360 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:01:33,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:33,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:33,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:33,361 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:01:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:01:33,715 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:01:33,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 13:01:33,715 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:01:33,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:01:33,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:01:33,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:01:33,717 INFO L87 Difference]: Start difference. First operand 2878 states and 4713 transitions. Second operand 6 states. [2018-08-07 13:01:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:01:40,846 INFO L93 Difference]: Finished difference Result 7152 states and 11703 transitions. [2018-08-07 13:01:40,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 13:01:40,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-08-07 13:01:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:01:40,892 INFO L225 Difference]: With dead ends: 7152 [2018-08-07 13:01:40,892 INFO L226 Difference]: Without dead ends: 4280 [2018-08-07 13:01:40,906 INFO L603 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 [2018-08-07 13:01:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2018-08-07 13:01:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4238. [2018-08-07 13:01:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2018-08-07 13:01:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5870 transitions. [2018-08-07 13:01:41,049 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5870 transitions. Word has length 134 [2018-08-07 13:01:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:01:41,049 INFO L480 AbstractCegarLoop]: Abstraction has 4238 states and 5870 transitions. [2018-08-07 13:01:41,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:01:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5870 transitions. [2018-08-07 13:01:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-08-07 13:01:41,054 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:01:41,054 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:01:41,054 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:01:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash -713221985, now seen corresponding path program 1 times [2018-08-07 13:01:41,055 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:01:41,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:41,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:41,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:41,056 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:01:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:41,437 WARN L170 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:01:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 111 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 13:01:41,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:01:41,824 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-08-07 13:01:41,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:41,833 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:01:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:41,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:01:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-08-07 13:01:42,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:01:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-08-07 13:01:42,469 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 13:01:42,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-08-07 13:01:42,470 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:01:42,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:01:42,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:01:42,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-08-07 13:01:42,472 INFO L87 Difference]: Start difference. First operand 4238 states and 5870 transitions. Second operand 3 states. [2018-08-07 13:01:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:01:49,930 INFO L93 Difference]: Finished difference Result 12466 states and 17703 transitions. [2018-08-07 13:01:49,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:01:49,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-08-07 13:01:49,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:01:49,976 INFO L225 Difference]: With dead ends: 12466 [2018-08-07 13:01:49,976 INFO L226 Difference]: Without dead ends: 8234 [2018-08-07 13:01:50,010 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 442 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-08-07 13:01:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2018-08-07 13:01:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 8232. [2018-08-07 13:01:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8232 states. [2018-08-07 13:01:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 10655 transitions. [2018-08-07 13:01:50,217 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 10655 transitions. Word has length 221 [2018-08-07 13:01:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:01:50,218 INFO L480 AbstractCegarLoop]: Abstraction has 8232 states and 10655 transitions. [2018-08-07 13:01:50,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:01:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 10655 transitions. [2018-08-07 13:01:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-08-07 13:01:50,232 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:01:50,232 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 13:01:50,233 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:01:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1430732511, now seen corresponding path program 1 times [2018-08-07 13:01:50,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:01:50,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:50,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:50,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:01:50,234 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:01:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-08-07 13:01:51,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:01:51,184 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:01:51,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:51,192 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:01:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:51,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:01:52,425 WARN L170 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-08-07 13:01:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-08-07 13:01:53,146 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:01:53,580 WARN L170 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-08-07 13:01:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:01:54,866 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:01:54,866 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 13:01:54,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:01:54,884 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:01:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:01:55,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:01:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-08-07 13:01:55,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:02:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:02:02,505 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 13:02:02,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 7, 8] total 27 [2018-08-07 13:02:02,505 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 13:02:02,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-08-07 13:02:02,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-08-07 13:02:02,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=574, Unknown=3, NotChecked=0, Total=702 [2018-08-07 13:02:02,507 INFO L87 Difference]: Start difference. First operand 8232 states and 10655 transitions. Second operand 14 states. [2018-08-07 13:02:02,794 WARN L170 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-08-07 13:03:34,793 WARN L170 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2018-08-07 13:03:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:03:58,693 INFO L93 Difference]: Finished difference Result 78614 states and 133366 transitions. [2018-08-07 13:03:58,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-08-07 13:03:58,695 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 284 [2018-08-07 13:03:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:03:59,490 INFO L225 Difference]: With dead ends: 78614 [2018-08-07 13:03:59,490 INFO L226 Difference]: Without dead ends: 69876 [2018-08-07 13:03:59,993 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1294 GetRequests, 1117 SyntacticMatches, 3 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11632 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=4719, Invalid=26078, Unknown=3, NotChecked=0, Total=30800 [2018-08-07 13:04:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69876 states. [2018-08-07 13:04:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69876 to 66518. [2018-08-07 13:04:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66518 states. [2018-08-07 13:04:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66518 states to 66518 states and 89113 transitions. [2018-08-07 13:04:03,494 INFO L78 Accepts]: Start accepts. Automaton has 66518 states and 89113 transitions. Word has length 284 [2018-08-07 13:04:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:04:03,494 INFO L480 AbstractCegarLoop]: Abstraction has 66518 states and 89113 transitions. [2018-08-07 13:04:03,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-08-07 13:04:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 66518 states and 89113 transitions. [2018-08-07 13:04:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-08-07 13:04:03,563 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:04:03,564 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:04:03,564 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:04:03,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2129032419, now seen corresponding path program 1 times [2018-08-07 13:04:03,564 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:04:03,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:04:03,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:03,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:04:03,566 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:04:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 154 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 13:04:03,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:04:03,900 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:04:03,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:03,910 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:04:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:04,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:04:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-08-07 13:04:04,165 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:04:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-08-07 13:04:04,363 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 13:04:04,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-08-07 13:04:04,364 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:04:04,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:04:04,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:04:04,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:04:04,365 INFO L87 Difference]: Start difference. First operand 66518 states and 89113 transitions. Second operand 3 states. [2018-08-07 13:04:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:04:11,961 INFO L93 Difference]: Finished difference Result 154184 states and 218831 transitions. [2018-08-07 13:04:11,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:04:11,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-08-07 13:04:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:04:12,583 INFO L225 Difference]: With dead ends: 154184 [2018-08-07 13:04:12,584 INFO L226 Difference]: Without dead ends: 87340 [2018-08-07 13:04:13,046 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:04:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87340 states. [2018-08-07 13:04:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87340 to 87144. [2018-08-07 13:04:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87144 states. [2018-08-07 13:04:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87144 states to 87144 states and 120322 transitions. [2018-08-07 13:04:16,805 INFO L78 Accepts]: Start accepts. Automaton has 87144 states and 120322 transitions. Word has length 289 [2018-08-07 13:04:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:04:16,806 INFO L480 AbstractCegarLoop]: Abstraction has 87144 states and 120322 transitions. [2018-08-07 13:04:16,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:04:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 87144 states and 120322 transitions. [2018-08-07 13:04:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-08-07 13:04:16,857 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:04:16,858 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 13:04:16,858 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:04:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash 914351724, now seen corresponding path program 1 times [2018-08-07 13:04:16,859 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:04:16,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:04:16,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:16,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:04:16,860 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:04:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 97 proven. 105 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-08-07 13:04:17,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:04:17,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:04:17,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:17,365 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:04:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:17,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:04:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 13:04:17,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:04:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 94 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 13:04:18,003 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 13:04:18,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-08-07 13:04:18,004 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:04:18,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 13:04:18,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 13:04:18,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-08-07 13:04:18,005 INFO L87 Difference]: Start difference. First operand 87144 states and 120322 transitions. Second operand 5 states. [2018-08-07 13:04:32,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:04:32,198 INFO L93 Difference]: Finished difference Result 189434 states and 249475 transitions. [2018-08-07 13:04:32,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 13:04:32,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2018-08-07 13:04:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:04:32,644 INFO L225 Difference]: With dead ends: 189434 [2018-08-07 13:04:32,644 INFO L226 Difference]: Without dead ends: 100068 [2018-08-07 13:04:33,114 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-08-07 13:04:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100068 states. [2018-08-07 13:04:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100068 to 98529. [2018-08-07 13:04:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98529 states. [2018-08-07 13:04:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98529 states to 98529 states and 122038 transitions. [2018-08-07 13:04:35,889 INFO L78 Accepts]: Start accepts. Automaton has 98529 states and 122038 transitions. Word has length 306 [2018-08-07 13:04:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:04:35,890 INFO L480 AbstractCegarLoop]: Abstraction has 98529 states and 122038 transitions. [2018-08-07 13:04:35,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 13:04:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 98529 states and 122038 transitions. [2018-08-07 13:04:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2018-08-07 13:04:35,934 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:04:35,934 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:04:35,934 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:04:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1434532931, now seen corresponding path program 1 times [2018-08-07 13:04:35,935 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:04:35,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:04:35,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:35,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:04:35,936 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:04:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:36,524 WARN L170 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-08-07 13:04:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 159 proven. 168 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-08-07 13:04:37,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:04:37,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:04:37,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:37,370 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:04:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:37,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:04:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-08-07 13:04:38,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:04:38,766 WARN L170 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-08-07 13:04:39,325 WARN L170 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 13:04:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 219 proven. 109 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-08-07 13:04:39,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:04:39,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 13:04:39,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:04:39,765 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:04:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:04:40,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:04:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-08-07 13:04:41,573 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:04:41,801 WARN L170 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-08-07 13:04:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 149 proven. 175 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-08-07 13:04:42,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 13:04:42,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 20 [2018-08-07 13:04:42,132 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 13:04:42,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-08-07 13:04:42,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-08-07 13:04:42,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2018-08-07 13:04:42,134 INFO L87 Difference]: Start difference. First operand 98529 states and 122038 transitions. Second operand 15 states. Received shutdown request... [2018-08-07 13:04:53,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-08-07 13:04:53,299 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 13:04:53,304 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 13:04:53,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 01:04:53 BoogieIcfgContainer [2018-08-07 13:04:53,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 13:04:53,306 INFO L168 Benchmark]: Toolchain (without parser) took 238369.16 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -267.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-08-07 13:04:53,307 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 13:04:53,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1786.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2018-08-07 13:04:53,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-08-07 13:04:53,309 INFO L168 Benchmark]: Boogie Preprocessor took 856.37 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 941.6 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-08-07 13:04:53,310 INFO L168 Benchmark]: RCFGBuilder took 12435.42 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 501.8 MB). Peak memory consumption was 501.8 MB. Max. memory is 7.1 GB. [2018-08-07 13:04:53,311 INFO L168 Benchmark]: TraceAbstraction took 222994.62 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 159.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-08-07 13:04:53,315 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1786.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 291.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 856.37 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 941.6 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12435.42 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 501.8 MB). Peak memory consumption was 501.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222994.62 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 159.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 149). Cancelled while BasicCegarLoop was constructing difference of abstraction (98529states) and FLOYD_HOARE automaton (currently 31 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (93038 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 188.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3336 SDtfs, 32653 SDslu, 4261 SDs, 0 SdLazy, 55724 SolverSat, 11997 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 155.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4558 GetRequests, 4281 SyntacticMatches, 20 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12211 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98529occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 5198 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 3948 NumberOfCodeBlocks, 3948 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6072 ConstructedInterpolants, 191 QuantifiedInterpolants, 9631379 SizeOfPredicates, 24 NumberOfNonLiveVariables, 3567 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 3682/4752 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_13-04-53-330.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_13-04-53-330.csv Completed graceful shutdown