java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:32:36,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:32:36,868 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:32:36,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:32:36,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:32:36,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:32:36,891 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:32:36,893 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:32:36,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:32:36,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:32:36,907 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:32:36,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:32:36,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:32:36,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:32:36,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:32:36,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:32:36,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:32:36,917 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:32:36,923 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:32:36,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:32:36,929 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:32:36,931 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:32:36,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:32:36,934 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:32:36,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:32:36,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:32:36,936 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:32:36,937 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:32:36,938 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:32:36,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:32:36,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:32:36,939 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:32:36,940 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:32:36,940 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:32:36,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:32:36,942 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:32:36,942 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 [2018-07-24 12:32:36,957 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:32:36,957 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:32:36,958 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:32:36,958 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:32:36,958 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:32:36,959 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:32:36,959 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:32:36,959 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:32:36,959 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:32:36,959 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:32:36,960 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:32:36,960 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:32:36,960 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:32:36,961 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:32:36,961 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:32:36,961 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:32:36,961 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:32:36,961 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:32:36,962 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:32:36,962 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:32:36,962 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:32:36,962 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:32:36,962 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:32:36,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:32:36,963 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:32:36,963 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:32:36,963 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:32:36,963 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:32:36,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:32:36,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:32:36,964 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:32:36,964 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:32:36,964 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:32:37,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:32:37,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:32:37,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:32:37,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:32:37,049 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:32:37,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label34_false-unreach-call.c [2018-07-24 12:32:37,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed99f3c5d/1cc87dc7db824cf1a998e552c0a526bf/FLAG48dfbb16a [2018-07-24 12:32:37,818 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:32:37,819 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label34_false-unreach-call.c [2018-07-24 12:32:37,851 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed99f3c5d/1cc87dc7db824cf1a998e552c0a526bf/FLAG48dfbb16a [2018-07-24 12:32:37,873 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed99f3c5d/1cc87dc7db824cf1a998e552c0a526bf [2018-07-24 12:32:37,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:32:37,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:32:37,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:32:37,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:32:37,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:32:37,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:32:37" (1/1) ... [2018-07-24 12:32:37,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c88a8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:37, skipping insertion in model container [2018-07-24 12:32:37,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:32:37" (1/1) ... [2018-07-24 12:32:38,257 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:32:39,078 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:32:39,094 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:32:39,592 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:32:39,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39 WrapperNode [2018-07-24 12:32:39,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:32:39,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:32:39,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:32:39,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:32:39,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:39,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:39,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:32:39,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:32:39,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:32:39,929 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:32:40,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... [2018-07-24 12:32:40,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:32:40,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:32:40,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:32:40,587 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:32:40,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:32:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:32:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:32:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:32:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:32:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:32:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:32:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:32:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:32:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:32:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:32:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:32:40,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:32:49,474 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:32:49,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:32:49 BoogieIcfgContainer [2018-07-24 12:32:49,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:32:49,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:32:49,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:32:49,480 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:32:49,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:32:37" (1/3) ... [2018-07-24 12:32:49,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d70e86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:32:49, skipping insertion in model container [2018-07-24 12:32:49,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:39" (2/3) ... [2018-07-24 12:32:49,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d70e86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:32:49, skipping insertion in model container [2018-07-24 12:32:49,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:32:49" (3/3) ... [2018-07-24 12:32:49,483 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label34_false-unreach-call.c [2018-07-24 12:32:49,492 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:32:49,500 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:32:49,560 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:32:49,561 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:32:49,561 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:32:49,561 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:32:49,561 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:32:49,562 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:32:49,562 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:32:49,562 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:32:49,562 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:32:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:32:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-24 12:32:49,608 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:49,613 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:32:49,613 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1971681596, now seen corresponding path program 1 times [2018-07-24 12:32:49,622 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:49,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:49,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:49,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:49,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:50,026 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:32:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:50,130 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:32:50,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:32:50,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:50,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:32:50,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:32:50,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:32:50,155 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 12:32:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:56,092 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 12:32:56,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:32:56,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-07-24 12:32:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:56,130 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 12:32:56,131 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 12:32:56,144 INFO L573 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 [2018-07-24 12:32:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 12:32:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 12:32:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 12:32:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-07-24 12:32:56,322 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 14 [2018-07-24 12:32:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:56,322 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-07-24 12:32:56,322 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:32:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-07-24 12:32:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-24 12:32:56,330 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:56,330 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:32:56,330 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash 438657202, now seen corresponding path program 1 times [2018-07-24 12:32:56,331 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:56,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:56,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:56,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:56,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:56,586 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:32:56,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:32:56,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:56,589 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:32:56,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:32:56,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:32:56,590 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-07-24 12:33:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:05,162 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-07-24 12:33:05,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:33:05,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2018-07-24 12:33:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:05,184 INFO L225 Difference]: With dead ends: 4419 [2018-07-24 12:33:05,184 INFO L226 Difference]: Without dead ends: 2951 [2018-07-24 12:33:05,189 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:33:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-07-24 12:33:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-07-24 12:33:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-07-24 12:33:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-07-24 12:33:05,306 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 84 [2018-07-24 12:33:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:05,307 INFO L471 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-07-24 12:33:05,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:33:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-07-24 12:33:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-24 12:33:05,312 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:05,312 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:33:05,312 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:05,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1133029465, now seen corresponding path program 1 times [2018-07-24 12:33:05,313 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:05,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:05,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:05,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:05,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:05,553 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:33:05,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:33:05,553 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:05,555 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:33:05,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:33:05,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:33:05,557 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-07-24 12:33:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:11,571 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-07-24 12:33:11,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:33:11,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-07-24 12:33:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:11,597 INFO L225 Difference]: With dead ends: 7345 [2018-07-24 12:33:11,597 INFO L226 Difference]: Without dead ends: 4426 [2018-07-24 12:33:11,606 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:33:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-07-24 12:33:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-07-24 12:33:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-07-24 12:33:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-07-24 12:33:11,725 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 85 [2018-07-24 12:33:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:11,726 INFO L471 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-07-24 12:33:11,726 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:33:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-07-24 12:33:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-24 12:33:11,730 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:11,730 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:11,730 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:11,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1314024957, now seen corresponding path program 1 times [2018-07-24 12:33:11,731 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:11,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:11,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:11,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:11,732 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:11,900 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:33:11,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:33:11,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:11,901 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:33:11,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:33:11,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:33:11,901 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 6 states. [2018-07-24 12:33:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:17,495 INFO L93 Difference]: Finished difference Result 11801 states and 17592 transitions. [2018-07-24 12:33:17,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:33:17,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2018-07-24 12:33:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:17,530 INFO L225 Difference]: With dead ends: 11801 [2018-07-24 12:33:17,530 INFO L226 Difference]: Without dead ends: 7416 [2018-07-24 12:33:17,543 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:33:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7416 states. [2018-07-24 12:33:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7416 to 7323. [2018-07-24 12:33:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7323 states. [2018-07-24 12:33:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7323 states to 7323 states and 10451 transitions. [2018-07-24 12:33:17,720 INFO L78 Accepts]: Start accepts. Automaton has 7323 states and 10451 transitions. Word has length 87 [2018-07-24 12:33:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:17,721 INFO L471 AbstractCegarLoop]: Abstraction has 7323 states and 10451 transitions. [2018-07-24 12:33:17,721 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:33:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7323 states and 10451 transitions. [2018-07-24 12:33:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-24 12:33:17,723 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:17,724 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:17,724 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:17,724 INFO L82 PathProgramCache]: Analyzing trace with hash 908644922, now seen corresponding path program 1 times [2018-07-24 12:33:17,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:17,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:17,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:17,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:17,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:17,936 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:33:17,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:33:17,936 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:17,937 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:33:17,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:33:17,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:33:17,938 INFO L87 Difference]: Start difference. First operand 7323 states and 10451 transitions. Second operand 4 states. [2018-07-24 12:33:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:26,552 INFO L93 Difference]: Finished difference Result 23221 states and 33567 transitions. [2018-07-24 12:33:26,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:33:26,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-07-24 12:33:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:26,619 INFO L225 Difference]: With dead ends: 23221 [2018-07-24 12:33:26,619 INFO L226 Difference]: Without dead ends: 15904 [2018-07-24 12:33:26,651 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:33:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15904 states. [2018-07-24 12:33:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15904 to 15904. [2018-07-24 12:33:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15904 states. [2018-07-24 12:33:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15904 states to 15904 states and 21024 transitions. [2018-07-24 12:33:26,977 INFO L78 Accepts]: Start accepts. Automaton has 15904 states and 21024 transitions. Word has length 112 [2018-07-24 12:33:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:26,978 INFO L471 AbstractCegarLoop]: Abstraction has 15904 states and 21024 transitions. [2018-07-24 12:33:26,978 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:33:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 15904 states and 21024 transitions. [2018-07-24 12:33:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-24 12:33:26,984 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:26,985 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:26,985 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:26,985 INFO L82 PathProgramCache]: Analyzing trace with hash -177318936, now seen corresponding path program 1 times [2018-07-24 12:33:26,986 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:26,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:26,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:26,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:26,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:33:27,215 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:27,215 INFO L191 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 [2018-07-24 12:33:27,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:27,224 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:27,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:33:27,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:33:28,227 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:33:28,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 12:33:28,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:28,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:33:28,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:33:28,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:33:28,229 INFO L87 Difference]: Start difference. First operand 15904 states and 21024 transitions. Second operand 5 states. [2018-07-24 12:33:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:38,109 INFO L93 Difference]: Finished difference Result 47421 states and 64038 transitions. [2018-07-24 12:33:38,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:33:38,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2018-07-24 12:33:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:38,262 INFO L225 Difference]: With dead ends: 47421 [2018-07-24 12:33:38,262 INFO L226 Difference]: Without dead ends: 31523 [2018-07-24 12:33:38,356 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:33:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31523 states. [2018-07-24 12:33:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31523 to 31351. [2018-07-24 12:33:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31351 states. [2018-07-24 12:33:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31351 states to 31351 states and 39427 transitions. [2018-07-24 12:33:39,217 INFO L78 Accepts]: Start accepts. Automaton has 31351 states and 39427 transitions. Word has length 178 [2018-07-24 12:33:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:39,218 INFO L471 AbstractCegarLoop]: Abstraction has 31351 states and 39427 transitions. [2018-07-24 12:33:39,218 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:33:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 31351 states and 39427 transitions. [2018-07-24 12:33:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-24 12:33:39,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:39,232 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:33:39,232 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash 558570645, now seen corresponding path program 1 times [2018-07-24 12:33:39,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:39,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:39,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:39,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:39,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 111 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:33:39,618 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:39,618 INFO L191 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 [2018-07-24 12:33:39,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:39,632 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:39,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 12:33:39,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 12:33:40,311 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:33:40,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-07-24 12:33:40,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:40,313 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:33:40,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:33:40,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:33:40,314 INFO L87 Difference]: Start difference. First operand 31351 states and 39427 transitions. Second operand 3 states. [2018-07-24 12:33:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:45,811 INFO L93 Difference]: Finished difference Result 62696 states and 78902 transitions. [2018-07-24 12:33:45,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:33:45,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-07-24 12:33:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:45,920 INFO L225 Difference]: With dead ends: 62696 [2018-07-24 12:33:45,920 INFO L226 Difference]: Without dead ends: 31351 [2018-07-24 12:33:45,988 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:33:46,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31351 states. [2018-07-24 12:33:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31351 to 29238. [2018-07-24 12:33:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29238 states. [2018-07-24 12:33:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29238 states to 29238 states and 36302 transitions. [2018-07-24 12:33:46,533 INFO L78 Accepts]: Start accepts. Automaton has 29238 states and 36302 transitions. Word has length 251 [2018-07-24 12:33:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:46,534 INFO L471 AbstractCegarLoop]: Abstraction has 29238 states and 36302 transitions. [2018-07-24 12:33:46,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:33:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 29238 states and 36302 transitions. [2018-07-24 12:33:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-07-24 12:33:46,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:46,582 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:46,582 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:46,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1842431649, now seen corresponding path program 1 times [2018-07-24 12:33:46,582 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:46,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:46,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:46,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:46,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 111 proven. 86 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:33:47,252 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:47,252 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:33:47,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:47,269 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:47,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:33:47,917 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 111 proven. 86 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:33:48,508 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:48,508 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:33:48,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:48,525 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:48,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:33:49,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 111 proven. 86 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:33:49,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:33:49,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:33:49,620 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:33:49,621 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:33:49,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:33:49,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:33:49,622 INFO L87 Difference]: Start difference. First operand 29238 states and 36302 transitions. Second operand 9 states. [2018-07-24 12:34:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:02,588 INFO L93 Difference]: Finished difference Result 70697 states and 91864 transitions. [2018-07-24 12:34:02,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:34:02,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 439 [2018-07-24 12:34:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:02,754 INFO L225 Difference]: With dead ends: 70697 [2018-07-24 12:34:02,754 INFO L226 Difference]: Without dead ends: 41465 [2018-07-24 12:34:02,863 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1778 GetRequests, 1757 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:34:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41465 states. [2018-07-24 12:34:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41465 to 41296. [2018-07-24 12:34:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41296 states. [2018-07-24 12:34:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41296 states to 41296 states and 51563 transitions. [2018-07-24 12:34:03,649 INFO L78 Accepts]: Start accepts. Automaton has 41296 states and 51563 transitions. Word has length 439 [2018-07-24 12:34:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:03,649 INFO L471 AbstractCegarLoop]: Abstraction has 41296 states and 51563 transitions. [2018-07-24 12:34:03,649 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:34:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 41296 states and 51563 transitions. [2018-07-24 12:34:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-07-24 12:34:03,725 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:03,726 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:03,726 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:03,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1038230303, now seen corresponding path program 1 times [2018-07-24 12:34:03,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:03,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:03,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:03,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:03,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:04,468 WARN L169 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:34:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 146 proven. 261 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-07-24 12:34:05,701 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:05,701 INFO L191 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 [2018-07-24 12:34:05,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:05,710 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:05,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2018-07-24 12:34:06,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2018-07-24 12:34:06,478 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:34:06,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-07-24 12:34:06,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:06,479 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:34:06,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:34:06,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:34:06,480 INFO L87 Difference]: Start difference. First operand 41296 states and 51563 transitions. Second operand 3 states. [2018-07-24 12:34:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:11,149 INFO L93 Difference]: Finished difference Result 81877 states and 102366 transitions. [2018-07-24 12:34:11,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:34:11,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 611 [2018-07-24 12:34:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:11,245 INFO L225 Difference]: With dead ends: 81877 [2018-07-24 12:34:11,245 INFO L226 Difference]: Without dead ends: 40587 [2018-07-24 12:34:11,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1220 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:34:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40587 states. [2018-07-24 12:34:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40587 to 39159. [2018-07-24 12:34:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39159 states. [2018-07-24 12:34:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39159 states to 39159 states and 47158 transitions. [2018-07-24 12:34:11,993 INFO L78 Accepts]: Start accepts. Automaton has 39159 states and 47158 transitions. Word has length 611 [2018-07-24 12:34:11,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:11,994 INFO L471 AbstractCegarLoop]: Abstraction has 39159 states and 47158 transitions. [2018-07-24 12:34:11,994 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:34:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 39159 states and 47158 transitions. [2018-07-24 12:34:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-07-24 12:34:12,052 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:12,053 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:34:12,053 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:12,053 INFO L82 PathProgramCache]: Analyzing trace with hash -713319244, now seen corresponding path program 1 times [2018-07-24 12:34:12,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:12,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:12,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:12,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:12,901 WARN L169 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:34:13,153 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:34:13,423 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-07-24 12:34:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 134 proven. 210 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-07-24 12:34:14,090 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:14,090 INFO L191 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 [2018-07-24 12:34:14,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:14,098 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:14,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:34:14,948 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:34:15,364 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:15,364 INFO L191 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 [2018-07-24 12:34:15,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:15,381 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:15,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:34:16,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:34:16,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:16,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-07-24 12:34:16,670 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:16,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:34:16,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:34:16,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:34:16,673 INFO L87 Difference]: Start difference. First operand 39159 states and 47158 transitions. Second operand 15 states. [2018-07-24 12:34:19,858 WARN L169 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2018-07-24 12:34:33,809 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 18 [2018-07-24 12:34:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:42,344 INFO L93 Difference]: Finished difference Result 84181 states and 101734 transitions. [2018-07-24 12:34:42,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-24 12:34:42,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 640 [2018-07-24 12:34:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:42,430 INFO L225 Difference]: With dead ends: 84181 [2018-07-24 12:34:42,430 INFO L226 Difference]: Without dead ends: 40286 [2018-07-24 12:34:42,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2641 GetRequests, 2580 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=730, Invalid=2930, Unknown=0, NotChecked=0, Total=3660 [2018-07-24 12:34:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40286 states. [2018-07-24 12:34:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40286 to 39956. [2018-07-24 12:34:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39956 states. [2018-07-24 12:34:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39956 states to 39956 states and 44151 transitions. [2018-07-24 12:34:43,176 INFO L78 Accepts]: Start accepts. Automaton has 39956 states and 44151 transitions. Word has length 640 [2018-07-24 12:34:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:43,177 INFO L471 AbstractCegarLoop]: Abstraction has 39956 states and 44151 transitions. [2018-07-24 12:34:43,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:34:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 39956 states and 44151 transitions. [2018-07-24 12:34:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-07-24 12:34:43,206 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:43,207 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:43,208 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash -552748838, now seen corresponding path program 1 times [2018-07-24 12:34:43,208 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:43,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:43,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:43,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:43,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 147 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:34:44,538 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:44,538 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:44,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:44,546 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:44,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 452 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:34:45,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 147 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:34:45,855 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:45,855 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:34:45,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:45,873 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:46,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 452 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:34:46,990 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:47,372 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:34:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 147 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:34:48,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:48,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-07-24 12:34:48,185 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:48,186 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:34:48,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:34:48,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:34:48,187 INFO L87 Difference]: Start difference. First operand 39956 states and 44151 transitions. Second operand 9 states. [2018-07-24 12:35:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:02,506 INFO L93 Difference]: Finished difference Result 130702 states and 155817 transitions. [2018-07-24 12:35:02,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:35:02,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 665 [2018-07-24 12:35:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:02,838 INFO L225 Difference]: With dead ends: 130702 [2018-07-24 12:35:02,838 INFO L226 Difference]: Without dead ends: 84379 [2018-07-24 12:35:03,071 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2682 GetRequests, 2658 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:35:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84379 states. [2018-07-24 12:35:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84379 to 82994. [2018-07-24 12:35:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82994 states. [2018-07-24 12:35:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82994 states to 82994 states and 98569 transitions. [2018-07-24 12:35:04,490 INFO L78 Accepts]: Start accepts. Automaton has 82994 states and 98569 transitions. Word has length 665 [2018-07-24 12:35:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:04,491 INFO L471 AbstractCegarLoop]: Abstraction has 82994 states and 98569 transitions. [2018-07-24 12:35:04,491 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:35:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 82994 states and 98569 transitions. [2018-07-24 12:35:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-07-24 12:35:04,500 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:04,501 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:04,501 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1950456908, now seen corresponding path program 1 times [2018-07-24 12:35:04,502 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:04,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:04,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:04,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:04,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 23 proven. 19 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-07-24 12:35:05,818 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:05,818 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:05,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:05,826 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:06,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-07-24 12:35:06,433 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 21 proven. 236 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-07-24 12:35:07,425 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:35:07,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2018-07-24 12:35:07,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:07,427 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:35:07,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:35:07,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:35:07,427 INFO L87 Difference]: Start difference. First operand 82994 states and 98569 transitions. Second operand 5 states. [2018-07-24 12:35:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:13,648 INFO L93 Difference]: Finished difference Result 171807 states and 203914 transitions. [2018-07-24 12:35:13,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:35:13,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 720 [2018-07-24 12:35:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:13,928 INFO L225 Difference]: With dead ends: 171807 [2018-07-24 12:35:13,928 INFO L226 Difference]: Without dead ends: 88838 [2018-07-24 12:35:14,136 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1457 GetRequests, 1440 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:35:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88838 states. [2018-07-24 12:35:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88838 to 88805. [2018-07-24 12:35:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88805 states. [2018-07-24 12:35:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88805 states to 88805 states and 105184 transitions. [2018-07-24 12:35:16,423 INFO L78 Accepts]: Start accepts. Automaton has 88805 states and 105184 transitions. Word has length 720 [2018-07-24 12:35:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:16,424 INFO L471 AbstractCegarLoop]: Abstraction has 88805 states and 105184 transitions. [2018-07-24 12:35:16,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:35:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 88805 states and 105184 transitions. [2018-07-24 12:35:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2018-07-24 12:35:16,457 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:16,458 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:16,458 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:16,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1070576755, now seen corresponding path program 1 times [2018-07-24 12:35:16,459 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:16,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:16,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:16,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:16,460 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 383 proven. 194 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-07-24 12:35:17,196 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:17,196 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:17,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:17,203 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:17,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-07-24 12:35:18,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 28 proven. 524 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-07-24 12:35:19,086 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:35:19,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 10 [2018-07-24 12:35:19,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:19,087 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:35:19,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:35:19,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:35:19,087 INFO L87 Difference]: Start difference. First operand 88805 states and 105184 transitions. Second operand 5 states. [2018-07-24 12:35:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:25,914 INFO L93 Difference]: Finished difference Result 171274 states and 197239 transitions. [2018-07-24 12:35:25,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:35:25,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 861 [2018-07-24 12:35:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:26,079 INFO L225 Difference]: With dead ends: 171274 [2018-07-24 12:35:26,079 INFO L226 Difference]: Without dead ends: 80417 [2018-07-24 12:35:26,246 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1729 GetRequests, 1714 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:35:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80417 states. [2018-07-24 12:35:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80417 to 79418. [2018-07-24 12:35:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79418 states. [2018-07-24 12:35:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79418 states to 79418 states and 86789 transitions. [2018-07-24 12:35:27,161 INFO L78 Accepts]: Start accepts. Automaton has 79418 states and 86789 transitions. Word has length 861 [2018-07-24 12:35:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:27,162 INFO L471 AbstractCegarLoop]: Abstraction has 79418 states and 86789 transitions. [2018-07-24 12:35:27,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:35:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 79418 states and 86789 transitions. [2018-07-24 12:35:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2018-07-24 12:35:27,198 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:27,199 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:27,199 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -677909867, now seen corresponding path program 1 times [2018-07-24 12:35:27,200 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:27,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:27,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:27,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:27,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 651 proven. 194 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2018-07-24 12:35:30,325 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:30,325 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:30,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:30,334 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:30,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 1304 proven. 2 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-07-24 12:35:31,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 651 proven. 194 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2018-07-24 12:35:33,417 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:33,417 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:35:33,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:33,434 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:34,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 1120 proven. 6 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2018-07-24 12:35:35,472 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 1120 proven. 194 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-07-24 12:35:37,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:35:37,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 20 [2018-07-24 12:35:37,038 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:35:37,040 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:35:37,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:35:37,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:35:37,040 INFO L87 Difference]: Start difference. First operand 79418 states and 86789 transitions. Second operand 9 states. [2018-07-24 12:36:00,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:00,403 INFO L93 Difference]: Finished difference Result 237254 states and 285522 transitions. [2018-07-24 12:36:00,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-24 12:36:00,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1389 [2018-07-24 12:36:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:00,937 INFO L225 Difference]: With dead ends: 237254 [2018-07-24 12:36:00,938 INFO L226 Difference]: Without dead ends: 153170 [2018-07-24 12:36:01,182 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5648 GetRequests, 5583 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=798, Invalid=3234, Unknown=0, NotChecked=0, Total=4032 [2018-07-24 12:36:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153170 states. [2018-07-24 12:36:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153170 to 149844. [2018-07-24 12:36:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149844 states. [2018-07-24 12:36:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149844 states to 149844 states and 166939 transitions. [2018-07-24 12:36:03,721 INFO L78 Accepts]: Start accepts. Automaton has 149844 states and 166939 transitions. Word has length 1389 [2018-07-24 12:36:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:03,722 INFO L471 AbstractCegarLoop]: Abstraction has 149844 states and 166939 transitions. [2018-07-24 12:36:03,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:36:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 149844 states and 166939 transitions. [2018-07-24 12:36:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1418 [2018-07-24 12:36:03,757 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:03,758 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:03,758 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:03,759 INFO L82 PathProgramCache]: Analyzing trace with hash 58221568, now seen corresponding path program 1 times [2018-07-24 12:36:03,759 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:03,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:03,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:03,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:03,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 422 proven. 1052 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-07-24 12:36:12,960 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:12,960 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:36:12,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:12,970 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:13,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 1346 proven. 2 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2018-07-24 12:36:14,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 672 proven. 194 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2018-07-24 12:36:15,863 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:15,864 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:36:15,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:15,879 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:16,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 1341 proven. 14 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-07-24 12:36:18,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 672 proven. 194 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2018-07-24 12:36:19,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:36:19,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5, 5, 5, 5] total 26 [2018-07-24 12:36:19,670 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:36:19,672 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-24 12:36:19,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-24 12:36:19,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2018-07-24 12:36:19,673 INFO L87 Difference]: Start difference. First operand 149844 states and 166939 transitions. Second operand 23 states. Received shutdown request... [2018-07-24 12:36:23,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 12:36:23,588 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:36:23,594 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:36:23,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:36:23 BoogieIcfgContainer [2018-07-24 12:36:23,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:36:23,595 INFO L168 Benchmark]: Toolchain (without parser) took 225707.83 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-24 12:36:23,596 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:36:23,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1851.06 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: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:23,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.71 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:23,597 INFO L168 Benchmark]: Boogie Preprocessor took 657.55 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:23,598 INFO L168 Benchmark]: RCFGBuilder took 8888.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 540.1 MB). Peak memory consumption was 540.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:23,599 INFO L168 Benchmark]: TraceAbstraction took 214118.23 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -774.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 12:36:23,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1851.06 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: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.71 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 657.55 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 860.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8888.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 540.1 MB). Peak memory consumption was 540.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214118.23 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -774.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (149844states) and interpolant automaton (currently 13 states, 23 states before enhancement), while ReachableStatesComputation was computing reachable states (834 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 151.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4100 SDtfs, 52386 SDslu, 3307 SDs, 0 SdLazy, 97021 SolverSat, 16277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23786 GetRequests, 23486 SyntacticMatches, 35 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2568 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149844occurred in iteration=14, 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: 11.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 10109 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 19274 NumberOfCodeBlocks, 19274 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 30950 ConstructedInterpolants, 0 QuantifiedInterpolants, 89680987 SizeOfPredicates, 14 NumberOfNonLiveVariables, 15891 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 45 InterpolantComputations, 12 PerfectInterpolantSequences, 28966/33453 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/Problem18_label34_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-36-23-623.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label34_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-36-23-623.csv Completed graceful shutdown