java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:23:21,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:23:21,971 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:23:21,984 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:23:21,985 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:23:21,986 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:23:21,987 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:23:21,989 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:23:21,991 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:23:21,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:23:21,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:23:21,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:23:21,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:23:21,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:23:21,996 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:23:21,997 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:23:21,997 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:23:21,999 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:23:22,001 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:23:22,003 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:23:22,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:23:22,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:23:22,009 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-10 12:23:22,022 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:23:22,024 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:23:22,025 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:23:22,026 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:23:22,026 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 [2018-09-10 12:23:22,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:23:22,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:23:22,042 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:23:22,042 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:23:22,043 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:23:22,043 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:23:22,043 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:23:22,043 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:23:22,043 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:23:22,044 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:23:22,044 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:23:22,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:23:22,045 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:23:22,045 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:23:22,045 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:23:22,045 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:23:22,046 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:23:22,046 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:23:22,046 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:23:22,046 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:23:22,046 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:23:22,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:23:22,047 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:23:22,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:23:22,047 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:23:22,047 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:23:22,048 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:23:22,048 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:23:22,048 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:23:22,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:23:22,048 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:23:22,048 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:23:22,049 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:23:22,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:23:22,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:23:22,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:23:22,117 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:23:22,117 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:23:22,118 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-09-10 12:23:22,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d0c2a9c/345f565519c949608108395fb05abfe8/FLAG37158178f [2018-09-10 12:23:22,923 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:23:22,924 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-09-10 12:23:22,953 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d0c2a9c/345f565519c949608108395fb05abfe8/FLAG37158178f [2018-09-10 12:23:22,975 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03d0c2a9c/345f565519c949608108395fb05abfe8 [2018-09-10 12:23:22,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:23:22,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:23:22,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:23:22,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:23:23,003 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:23:23,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:23:22" (1/1) ... [2018-09-10 12:23:23,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674bafe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:23, skipping insertion in model container [2018-09-10 12:23:23,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:23:22" (1/1) ... [2018-09-10 12:23:23,352 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:23:24,144 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:23:24,163 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:23:24,760 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:23:24,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24 WrapperNode [2018-09-10 12:23:24,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:23:24,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:23:24,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:23:24,962 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:23:24,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:25,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:25,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:23:25,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:23:25,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:23:25,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:23:25,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:25,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:25,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:25,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:25,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:26,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:26,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (1/1) ... [2018-09-10 12:23:26,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:23:26,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:23:26,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:23:26,181 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:23:26,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (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 [2018-09-10 12:23:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:23:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:23:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:23:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:23:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:23:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:23:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:23:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:23:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:23:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:23:36,852 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:23:36,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:23:36 BoogieIcfgContainer [2018-09-10 12:23:36,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:23:36,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:23:36,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:23:36,858 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:23:36,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:23:22" (1/3) ... [2018-09-10 12:23:36,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbdf8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:23:36, skipping insertion in model container [2018-09-10 12:23:36,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:24" (2/3) ... [2018-09-10 12:23:36,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbdf8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:23:36, skipping insertion in model container [2018-09-10 12:23:36,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:23:36" (3/3) ... [2018-09-10 12:23:36,862 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label05_true-unreach-call.c [2018-09-10 12:23:36,871 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:23:36,880 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:23:36,933 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:23:36,934 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:23:36,934 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:23:36,934 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:23:36,934 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:23:36,934 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:23:36,935 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:23:36,935 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:23:36,935 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:23:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:23:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-10 12:23:36,980 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:23:36,981 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:23:36,983 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:23:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1588025532, now seen corresponding path program 1 times [2018-09-10 12:23:36,991 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:23:37,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:37,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:37,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:37,043 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:23:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:37,602 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:23:37,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:23:37,603 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:23:37,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:23:37,626 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:23:37,627 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:23:37,630 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:23:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:23:48,071 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-09-10 12:23:48,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:23:48,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-09-10 12:23:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:23:48,109 INFO L225 Difference]: With dead ends: 2137 [2018-09-10 12:23:48,109 INFO L226 Difference]: Without dead ends: 1527 [2018-09-10 12:23:48,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:23:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-09-10 12:23:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-09-10 12:23:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-09-10 12:23:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-09-10 12:23:48,262 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 68 [2018-09-10 12:23:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:23:48,263 INFO L480 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-09-10 12:23:48,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:23:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-09-10 12:23:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-10 12:23:48,272 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:23:48,272 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:23:48,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:23:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash 89156554, now seen corresponding path program 1 times [2018-09-10 12:23:48,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:23:48,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:48,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:48,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:48,275 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:23:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:48,560 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:23:48,561 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:23:48,561 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:23:48,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:23:48,563 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:23:48,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:23:48,564 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-09-10 12:23:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:23:57,689 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-09-10 12:23:57,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:23:57,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-09-10 12:23:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:23:57,715 INFO L225 Difference]: With dead ends: 4413 [2018-09-10 12:23:57,716 INFO L226 Difference]: Without dead ends: 2906 [2018-09-10 12:23:57,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:23:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-09-10 12:23:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-09-10 12:23:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-09-10 12:23:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-09-10 12:23:57,843 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 140 [2018-09-10 12:23:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:23:57,843 INFO L480 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-09-10 12:23:57,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:23:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-09-10 12:23:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-10 12:23:57,854 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:23:57,855 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:23:57,855 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:23:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1054904147, now seen corresponding path program 1 times [2018-09-10 12:23:57,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:23:57,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:57,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:57,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:57,860 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:23:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:58,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:23:58,212 INFO L197 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 [2018-09-10 12:23:58,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:58,230 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:23:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:58,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:03,907 WARN L175 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 32 [2018-09-10 12:24:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:06,217 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:06,662 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:24:06,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-10 12:24:06,663 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:06,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:24:06,664 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:24:06,664 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=77, Unknown=3, NotChecked=0, Total=110 [2018-09-10 12:24:06,664 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 3 states. [2018-09-10 12:24:11,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:11,597 INFO L93 Difference]: Finished difference Result 6631 states and 10071 transitions. [2018-09-10 12:24:11,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:24:11,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-09-10 12:24:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:11,623 INFO L225 Difference]: With dead ends: 6631 [2018-09-10 12:24:11,623 INFO L226 Difference]: Without dead ends: 3764 [2018-09-10 12:24:11,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 282 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=30, Invalid=77, Unknown=3, NotChecked=0, Total=110 [2018-09-10 12:24:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2018-09-10 12:24:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3762. [2018-09-10 12:24:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2018-09-10 12:24:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5370 transitions. [2018-09-10 12:24:11,787 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5370 transitions. Word has length 143 [2018-09-10 12:24:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:11,788 INFO L480 AbstractCegarLoop]: Abstraction has 3762 states and 5370 transitions. [2018-09-10 12:24:11,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:24:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5370 transitions. [2018-09-10 12:24:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-10 12:24:11,801 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:11,802 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:24:11,802 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:11,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2068414108, now seen corresponding path program 1 times [2018-09-10 12:24:11,803 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:11,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:11,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:11,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:11,804 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:12,251 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:24:12,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:24:12,251 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:12,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:24:12,252 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:24:12,253 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:24:12,253 INFO L87 Difference]: Start difference. First operand 3762 states and 5370 transitions. Second operand 6 states. [2018-09-10 12:24:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:31,201 INFO L93 Difference]: Finished difference Result 13889 states and 23048 transitions. [2018-09-10 12:24:31,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:24:31,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-09-10 12:24:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:31,296 INFO L225 Difference]: With dead ends: 13889 [2018-09-10 12:24:31,296 INFO L226 Difference]: Without dead ends: 10133 [2018-09-10 12:24:31,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:24:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10133 states. [2018-09-10 12:24:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 9949. [2018-09-10 12:24:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9949 states. [2018-09-10 12:24:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9949 states to 9949 states and 14449 transitions. [2018-09-10 12:24:31,709 INFO L78 Accepts]: Start accepts. Automaton has 9949 states and 14449 transitions. Word has length 223 [2018-09-10 12:24:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:31,710 INFO L480 AbstractCegarLoop]: Abstraction has 9949 states and 14449 transitions. [2018-09-10 12:24:31,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:24:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 9949 states and 14449 transitions. [2018-09-10 12:24:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-09-10 12:24:31,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:31,726 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:24:31,726 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:31,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1819652961, now seen corresponding path program 1 times [2018-09-10 12:24:31,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:31,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:31,728 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:32,014 WARN L175 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:24:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 122 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:24:32,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:32,239 INFO L197 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 [2018-09-10 12:24:32,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:32,249 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:32,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 12:24:32,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 122 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:24:32,970 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:24:32,970 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:24:32,970 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:32,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:24:32,972 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:24:32,972 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:24:32,972 INFO L87 Difference]: Start difference. First operand 9949 states and 14449 transitions. Second operand 5 states. [2018-09-10 12:24:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:39,424 INFO L93 Difference]: Finished difference Result 23568 states and 35597 transitions. [2018-09-10 12:24:39,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:24:39,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-09-10 12:24:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:39,491 INFO L225 Difference]: With dead ends: 23568 [2018-09-10 12:24:39,491 INFO L226 Difference]: Without dead ends: 12228 [2018-09-10 12:24:39,563 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 457 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:24:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12228 states. [2018-09-10 12:24:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12228 to 12191. [2018-09-10 12:24:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12191 states. [2018-09-10 12:24:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 16150 transitions. [2018-09-10 12:24:40,141 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 16150 transitions. Word has length 231 [2018-09-10 12:24:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:40,142 INFO L480 AbstractCegarLoop]: Abstraction has 12191 states and 16150 transitions. [2018-09-10 12:24:40,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:24:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 16150 transitions. [2018-09-10 12:24:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-10 12:24:40,148 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:40,149 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:24:40,149 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1395627024, now seen corresponding path program 1 times [2018-09-10 12:24:40,150 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:40,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:40,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:40,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:40,151 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 12:24:40,502 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:24:40,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:24:40,503 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:40,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:24:40,503 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:24:40,503 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:24:40,504 INFO L87 Difference]: Start difference. First operand 12191 states and 16150 transitions. Second operand 4 states. [2018-09-10 12:24:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:46,713 INFO L93 Difference]: Finished difference Result 42937 states and 60729 transitions. [2018-09-10 12:24:46,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:24:46,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-09-10 12:24:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:46,869 INFO L225 Difference]: With dead ends: 42937 [2018-09-10 12:24:46,869 INFO L226 Difference]: Without dead ends: 30751 [2018-09-10 12:24:46,961 INFO L604 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 [2018-09-10 12:24:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30751 states. [2018-09-10 12:24:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30751 to 30750. [2018-09-10 12:24:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30750 states. [2018-09-10 12:24:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30750 states to 30750 states and 40207 transitions. [2018-09-10 12:24:48,108 INFO L78 Accepts]: Start accepts. Automaton has 30750 states and 40207 transitions. Word has length 232 [2018-09-10 12:24:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:48,110 INFO L480 AbstractCegarLoop]: Abstraction has 30750 states and 40207 transitions. [2018-09-10 12:24:48,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:24:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 30750 states and 40207 transitions. [2018-09-10 12:24:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-10 12:24:48,129 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:48,129 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:24:48,129 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:48,130 INFO L82 PathProgramCache]: Analyzing trace with hash 743874324, now seen corresponding path program 1 times [2018-09-10 12:24:48,130 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:48,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:48,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:48,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:48,132 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:48,682 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:48,682 INFO L197 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 [2018-09-10 12:24:48,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:48,698 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:48,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:49,013 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:49,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:49,329 INFO L197 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 [2018-09-10 12:24:49,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:49,356 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:49,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:49,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:50,185 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:24:50,185 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:24:50,185 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:24:50,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:24:50,188 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:24:50,188 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:24:50,188 INFO L87 Difference]: Start difference. First operand 30750 states and 40207 transitions. Second operand 9 states. [2018-09-10 12:25:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:25:00,859 INFO L93 Difference]: Finished difference Result 61467 states and 80586 transitions. [2018-09-10 12:25:00,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 12:25:00,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 249 [2018-09-10 12:25:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:25:00,988 INFO L225 Difference]: With dead ends: 61467 [2018-09-10 12:25:00,989 INFO L226 Difference]: Without dead ends: 30723 [2018-09-10 12:25:01,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 988 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:25:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30723 states. [2018-09-10 12:25:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30723 to 30684. [2018-09-10 12:25:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30684 states. [2018-09-10 12:25:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30684 states to 30684 states and 37033 transitions. [2018-09-10 12:25:01,675 INFO L78 Accepts]: Start accepts. Automaton has 30684 states and 37033 transitions. Word has length 249 [2018-09-10 12:25:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:25:01,675 INFO L480 AbstractCegarLoop]: Abstraction has 30684 states and 37033 transitions. [2018-09-10 12:25:01,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:25:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 30684 states and 37033 transitions. [2018-09-10 12:25:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-09-10 12:25:01,689 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:25:01,690 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:25:01,690 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:25:01,690 INFO L82 PathProgramCache]: Analyzing trace with hash -367581595, now seen corresponding path program 1 times [2018-09-10 12:25:01,690 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:25:01,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:01,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:01,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:01,692 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:25:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:02,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:02,092 INFO L197 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 [2018-09-10 12:25:02,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:02,102 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:02,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:02,377 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:03,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:03,306 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:25:03,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:03,337 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:03,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:03,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:04,288 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:25:04,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-10 12:25:04,288 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:25:04,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:25:04,289 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:25:04,290 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:25:04,290 INFO L87 Difference]: Start difference. First operand 30684 states and 37033 transitions. Second operand 6 states. [2018-09-10 12:25:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:25:17,851 INFO L93 Difference]: Finished difference Result 75574 states and 95615 transitions. [2018-09-10 12:25:17,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 12:25:17,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 320 [2018-09-10 12:25:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:25:18,095 INFO L225 Difference]: With dead ends: 75574 [2018-09-10 12:25:18,095 INFO L226 Difference]: Without dead ends: 41758 [2018-09-10 12:25:18,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1280 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:25:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41758 states. [2018-09-10 12:25:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41758 to 37980. [2018-09-10 12:25:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37980 states. [2018-09-10 12:25:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37980 states to 37980 states and 44995 transitions. [2018-09-10 12:25:19,336 INFO L78 Accepts]: Start accepts. Automaton has 37980 states and 44995 transitions. Word has length 320 [2018-09-10 12:25:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:25:19,336 INFO L480 AbstractCegarLoop]: Abstraction has 37980 states and 44995 transitions. [2018-09-10 12:25:19,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:25:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 37980 states and 44995 transitions. [2018-09-10 12:25:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-10 12:25:19,763 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:25:19,763 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 12:25:19,764 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:25:19,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1578246784, now seen corresponding path program 1 times [2018-09-10 12:25:19,765 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:25:19,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:19,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:19,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:19,766 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:25:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 195 proven. 225 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:25:20,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:20,560 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:25:20,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:20,570 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:20,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:21,010 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 24 [2018-09-10 12:25:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 308 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 12:25:21,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:21,668 WARN L175 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-09-10 12:25:22,105 WARN L175 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2018-09-10 12:25:22,603 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 12:25:22,651 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-09-10 12:25:23,422 WARN L175 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2018-09-10 12:25:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 189 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:25:24,220 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:24,220 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:25:24,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:24,238 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:24,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 12:25:25,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:26,209 WARN L175 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-10 12:25:26,337 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-10 12:25:34,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 12:25:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 189 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:25:35,599 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:25:35,599 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 8] total 32 [2018-09-10 12:25:35,600 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:25:35,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:25:35,601 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:25:35,601 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=858, Unknown=4, NotChecked=0, Total=992 [2018-09-10 12:25:35,602 INFO L87 Difference]: Start difference. First operand 37980 states and 44995 transitions. Second operand 17 states. [2018-09-10 12:26:11,566 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-10 12:26:20,003 WARN L175 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-09-10 12:26:23,531 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-10 12:26:26,142 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-09-10 12:26:26,634 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2018-09-10 12:26:27,251 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-10 12:26:32,280 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-09-10 12:26:42,155 WARN L175 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2018-09-10 12:26:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:26:54,797 INFO L93 Difference]: Finished difference Result 138344 states and 165671 transitions. [2018-09-10 12:26:54,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-10 12:26:54,799 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 343 [2018-09-10 12:26:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:26:55,067 INFO L225 Difference]: With dead ends: 138344 [2018-09-10 12:26:55,067 INFO L226 Difference]: Without dead ends: 91604 [2018-09-10 12:26:55,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1622 GetRequests, 1461 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8411 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=3473, Invalid=21015, Unknown=4, NotChecked=0, Total=24492 [2018-09-10 12:26:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91604 states. [2018-09-10 12:26:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91604 to 85125. [2018-09-10 12:26:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85125 states. [2018-09-10 12:26:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85125 states to 85125 states and 99468 transitions. [2018-09-10 12:26:57,241 INFO L78 Accepts]: Start accepts. Automaton has 85125 states and 99468 transitions. Word has length 343 [2018-09-10 12:26:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:26:57,242 INFO L480 AbstractCegarLoop]: Abstraction has 85125 states and 99468 transitions. [2018-09-10 12:26:57,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 12:26:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 85125 states and 99468 transitions. [2018-09-10 12:26:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-10 12:26:57,251 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:26:57,251 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 12:26:57,252 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:26:57,252 INFO L82 PathProgramCache]: Analyzing trace with hash -335436505, now seen corresponding path program 1 times [2018-09-10 12:26:57,252 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:26:57,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:26:57,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:26:57,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:26:57,253 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:26:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:26:57,859 WARN L175 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-09-10 12:26:58,078 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 5 [2018-09-10 12:26:58,335 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 5 [2018-09-10 12:26:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 302 proven. 59 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:26:58,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:26:58,435 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:26:58,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:26:58,451 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:26:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:26:58,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:26:59,189 WARN L175 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-10 12:27:02,553 WARN L175 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-10 12:27:13,284 WARN L175 SmtUtils]: Spent 8.41 s on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2018-09-10 12:27:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 4 proven. 413 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-10 12:27:13,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:27:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 297 proven. 64 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:27:14,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:27:14,203 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:27:14,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:27:14,222 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:27:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:27:14,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-10 12:27:22,470 WARN L183 SmtUtils]: Removed 2 from assertion stack [2018-09-10 12:27:22,471 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 12:27:22,672 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:27:22,672 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:27:22,677 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:27:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:27:22 BoogieIcfgContainer [2018-09-10 12:27:22,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:27:22,678 INFO L168 Benchmark]: Toolchain (without parser) took 239690.69 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -417.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-10 12:27:22,679 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:27:22,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1968.63 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:22,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.97 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:22,681 INFO L168 Benchmark]: Boogie Preprocessor took 906.83 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 925.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:22,682 INFO L168 Benchmark]: RCFGBuilder took 10672.94 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 492.6 MB). Peak memory consumption was 492.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:22,683 INFO L168 Benchmark]: TraceAbstraction took 225823.18 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 26.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:27:22,688 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1968.63 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.97 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 906.83 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 925.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10672.94 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 492.6 MB). Peak memory consumption was 492.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225823.18 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 26.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was analyzing trace of length 348 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 176. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 225.7s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 161.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3124 SDtfs, 31144 SDslu, 4086 SDs, 0 SdLazy, 53853 SolverSat, 10064 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 132.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4720 GetRequests, 4480 SyntacticMatches, 19 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8544 ImplicationChecksByTransitivity, 31.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85125occurred in iteration=9, 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: 6.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 10567 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 29.4s InterpolantComputationTime, 4147 NumberOfCodeBlocks, 4147 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6320 ConstructedInterpolants, 255 QuantifiedInterpolants, 9337276 SizeOfPredicates, 18 NumberOfNonLiveVariables, 3875 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 5372/6404 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-27-22-706.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-27-22-706.csv Completed graceful shutdown