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/Problem12_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:43:26,898 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:43:26,901 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:43:26,916 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:43:26,916 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:43:26,917 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:43:26,918 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:43:26,920 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:43:26,922 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:43:26,923 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:43:26,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:43:26,924 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:43:26,925 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:43:26,926 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:43:26,927 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:43:26,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:43:26,929 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:43:26,931 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:43:26,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:43:26,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:43:26,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:43:26,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:43:26,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-10 11:43:26,946 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:43:26,947 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:43:26,948 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:43:26,948 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:43:26,949 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 11:43:26,964 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:43:26,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:43:26,966 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:43:26,966 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:43:26,966 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:43:26,966 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:43:26,966 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:43:26,967 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:43:26,967 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:43:26,967 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:43:26,967 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:43:26,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:43:26,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:43:26,968 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:43:26,968 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:43:26,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:43:26,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:43:26,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:43:26,969 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:43:26,969 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:43:26,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:43:26,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:43:26,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:43:26,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:43:26,970 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:43:26,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:43:26,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:43:26,971 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:43:26,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:43:26,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:43:26,972 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:43:26,972 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:43:26,972 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:43:27,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:43:27,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:43:27,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:43:27,046 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:43:27,046 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:43:27,047 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-09-10 11:43:27,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d9cf01d/d09cb7516b6c4c75882903a32df2ae5a/FLAG682b5daea [2018-09-10 11:43:27,904 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:43:27,905 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-09-10 11:43:27,934 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d9cf01d/d09cb7516b6c4c75882903a32df2ae5a/FLAG682b5daea [2018-09-10 11:43:27,949 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d9cf01d/d09cb7516b6c4c75882903a32df2ae5a [2018-09-10 11:43:27,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:43:27,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:43:27,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:27,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:43:27,976 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:43:27,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:27" (1/1) ... [2018-09-10 11:43:27,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd4eff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:27, skipping insertion in model container [2018-09-10 11:43:27,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:27" (1/1) ... [2018-09-10 11:43:28,316 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:43:29,387 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:29,409 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:43:30,357 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:30,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30 WrapperNode [2018-09-10 11:43:30,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:30,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:30,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:43:30,630 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:43:30,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:30,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:30,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:30,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:43:30,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:43:30,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:43:31,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (1/1) ... [2018-09-10 11:43:31,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:43:31,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:43:31,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:43:31,771 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:43:31,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (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 11:43:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:43:31,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:43:31,846 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 11:43:31,846 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 11:43:31,846 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_output3 [2018-09-10 11:43:31,846 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_output3 [2018-09-10 11:43:31,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:43:31,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:43:31,847 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_output4 [2018-09-10 11:43:31,847 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_output4 [2018-09-10 11:43:31,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:43:31,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:43:31,848 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 11:43:31,848 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 11:43:45,148 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:43:45,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:43:45 BoogieIcfgContainer [2018-09-10 11:43:45,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:43:45,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:43:45,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:43:45,153 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:43:45,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:43:27" (1/3) ... [2018-09-10 11:43:45,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2792d9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:43:45, skipping insertion in model container [2018-09-10 11:43:45,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:30" (2/3) ... [2018-09-10 11:43:45,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2792d9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:43:45, skipping insertion in model container [2018-09-10 11:43:45,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:43:45" (3/3) ... [2018-09-10 11:43:45,156 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16_true-unreach-call.c [2018-09-10 11:43:45,166 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:43:45,176 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:43:45,235 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:43:45,236 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:43:45,236 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:43:45,236 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:43:45,237 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:43:45,237 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:43:45,237 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:43:45,237 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:43:45,237 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:43:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:43:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-10 11:43:45,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:45,302 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, 1, 1, 1, 1] [2018-09-10 11:43:45,304 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 11:43:45,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1560691060, now seen corresponding path program 1 times [2018-09-10 11:43:45,312 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:45,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:45,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:45,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:45,362 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:45,797 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 11:43:45,799 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:45,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:43:45,800 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:45,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:43:45,822 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:43:45,823 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:45,825 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:43:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:56,110 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:43:56,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:43:56,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-09-10 11:43:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:56,151 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:43:56,151 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:43:56,170 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:43:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:43:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:43:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-10 11:43:56,338 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 72 [2018-09-10 11:43:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:56,339 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-10 11:43:56,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:43:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-10 11:43:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-10 11:43:56,356 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:56,357 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:56,358 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 11:43:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1107747922, now seen corresponding path program 1 times [2018-09-10 11:43:56,358 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:56,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:56,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:56,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:56,362 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:43:56,751 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:56,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:43:56,752 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:56,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:43:56,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:43:56,754 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:43:56,755 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-09-10 11:44:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:11,543 INFO L93 Difference]: Finished difference Result 5563 states and 10127 transitions. [2018-09-10 11:44:11,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:11,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-10 11:44:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:11,570 INFO L225 Difference]: With dead ends: 5563 [2018-09-10 11:44:11,571 INFO L226 Difference]: Without dead ends: 3965 [2018-09-10 11:44:11,579 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2018-09-10 11:44:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3943. [2018-09-10 11:44:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2018-09-10 11:44:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 6401 transitions. [2018-09-10 11:44:11,687 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 6401 transitions. Word has length 146 [2018-09-10 11:44:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:11,688 INFO L480 AbstractCegarLoop]: Abstraction has 3943 states and 6401 transitions. [2018-09-10 11:44:11,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 6401 transitions. [2018-09-10 11:44:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-09-10 11:44:11,692 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:11,692 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, 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 11:44:11,692 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 11:44:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -616080879, now seen corresponding path program 1 times [2018-09-10 11:44:11,693 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:11,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:11,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:11,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:11,696 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:11,972 WARN L175 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:44:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:12,148 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:12,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:44:12,148 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:12,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:44:12,149 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:44:12,149 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:12,150 INFO L87 Difference]: Start difference. First operand 3943 states and 6401 transitions. Second operand 6 states. [2018-09-10 11:44:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:24,972 INFO L93 Difference]: Finished difference Result 12689 states and 20572 transitions. [2018-09-10 11:44:24,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:24,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-09-10 11:44:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:25,034 INFO L225 Difference]: With dead ends: 12689 [2018-09-10 11:44:25,034 INFO L226 Difference]: Without dead ends: 8752 [2018-09-10 11:44:25,060 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8752 states. [2018-09-10 11:44:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8752 to 8682. [2018-09-10 11:44:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8682 states. [2018-09-10 11:44:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13351 transitions. [2018-09-10 11:44:25,307 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13351 transitions. Word has length 151 [2018-09-10 11:44:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:25,307 INFO L480 AbstractCegarLoop]: Abstraction has 8682 states and 13351 transitions. [2018-09-10 11:44:25,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13351 transitions. [2018-09-10 11:44:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-10 11:44:25,312 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:25,312 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, 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] [2018-09-10 11:44:25,313 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 11:44:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2050760374, now seen corresponding path program 1 times [2018-09-10 11:44:25,313 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:25,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:25,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:25,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:25,315 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:25,498 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:25,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:25,499 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:25,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:25,499 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:25,499 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:25,500 INFO L87 Difference]: Start difference. First operand 8682 states and 13351 transitions. Second operand 5 states. [2018-09-10 11:44:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:50,425 INFO L93 Difference]: Finished difference Result 30462 states and 47404 transitions. [2018-09-10 11:44:50,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:44:50,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-09-10 11:44:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:50,514 INFO L225 Difference]: With dead ends: 30462 [2018-09-10 11:44:50,515 INFO L226 Difference]: Without dead ends: 21786 [2018-09-10 11:44:50,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:44:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21786 states. [2018-09-10 11:44:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21786 to 21547. [2018-09-10 11:44:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21547 states. [2018-09-10 11:44:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21547 states to 21547 states and 30302 transitions. [2018-09-10 11:44:51,100 INFO L78 Accepts]: Start accepts. Automaton has 21547 states and 30302 transitions. Word has length 176 [2018-09-10 11:44:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:51,101 INFO L480 AbstractCegarLoop]: Abstraction has 21547 states and 30302 transitions. [2018-09-10 11:44:51,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:44:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 21547 states and 30302 transitions. [2018-09-10 11:44:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-10 11:44:51,113 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:51,113 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, 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] [2018-09-10 11:44:51,113 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 11:44:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash -395147701, now seen corresponding path program 1 times [2018-09-10 11:44:51,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:51,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:51,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:51,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:51,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 11:44:51,634 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:51,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:51,635 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:51,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:51,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:51,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:51,637 INFO L87 Difference]: Start difference. First operand 21547 states and 30302 transitions. Second operand 5 states. [2018-09-10 11:45:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:02,202 INFO L93 Difference]: Finished difference Result 64964 states and 94811 transitions. [2018-09-10 11:45:02,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:45:02,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-09-10 11:45:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:02,369 INFO L225 Difference]: With dead ends: 64964 [2018-09-10 11:45:02,369 INFO L226 Difference]: Without dead ends: 43423 [2018-09-10 11:45:02,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43423 states. [2018-09-10 11:45:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43423 to 43008. [2018-09-10 11:45:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43008 states. [2018-09-10 11:45:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43008 states to 43008 states and 58543 transitions. [2018-09-10 11:45:03,361 INFO L78 Accepts]: Start accepts. Automaton has 43008 states and 58543 transitions. Word has length 229 [2018-09-10 11:45:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:03,362 INFO L480 AbstractCegarLoop]: Abstraction has 43008 states and 58543 transitions. [2018-09-10 11:45:03,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 43008 states and 58543 transitions. [2018-09-10 11:45:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-10 11:45:03,382 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:03,383 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, 3, 3, 3, 3, 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] [2018-09-10 11:45:03,383 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 11:45:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash -202266377, now seen corresponding path program 1 times [2018-09-10 11:45:03,384 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:03,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:03,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:03,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:03,386 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:03,707 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 130 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:04,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:04,158 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 11:45:04,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:04,178 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:04,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 11:45:04,850 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 130 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:05,309 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:45:05,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:45:05,309 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:05,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:05,311 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:05,311 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:45:05,311 INFO L87 Difference]: Start difference. First operand 43008 states and 58543 transitions. Second operand 5 states. [2018-09-10 11:45:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:17,563 INFO L93 Difference]: Finished difference Result 111393 states and 161034 transitions. [2018-09-10 11:45:17,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:45:17,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-09-10 11:45:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:17,938 INFO L225 Difference]: With dead ends: 111393 [2018-09-10 11:45:17,938 INFO L226 Difference]: Without dead ends: 68391 [2018-09-10 11:45:18,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 528 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:45:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68391 states. [2018-09-10 11:45:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68391 to 68007. [2018-09-10 11:45:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68007 states. [2018-09-10 11:45:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68007 states to 68007 states and 94232 transitions. [2018-09-10 11:45:20,445 INFO L78 Accepts]: Start accepts. Automaton has 68007 states and 94232 transitions. Word has length 267 [2018-09-10 11:45:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:20,446 INFO L480 AbstractCegarLoop]: Abstraction has 68007 states and 94232 transitions. [2018-09-10 11:45:20,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 68007 states and 94232 transitions. [2018-09-10 11:45:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-10 11:45:20,461 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:20,461 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, 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, 1, 1, 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 11:45:20,461 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 11:45:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1399232947, now seen corresponding path program 1 times [2018-09-10 11:45:20,462 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:20,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:20,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:20,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:20,463 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:20,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:20,758 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 11:45:20,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:20,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:20,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:21,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:21,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:21,229 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:45:21,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:21,246 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:21,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:21,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:21,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:45:21,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:45:21,938 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:45:21,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:45:21,939 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:45:21,940 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:45:21,940 INFO L87 Difference]: Start difference. First operand 68007 states and 94232 transitions. Second operand 9 states. [2018-09-10 11:45:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:42,687 INFO L93 Difference]: Finished difference Result 239452 states and 446952 transitions. [2018-09-10 11:45:42,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:45:42,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 273 [2018-09-10 11:45:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:43,645 INFO L225 Difference]: With dead ends: 239452 [2018-09-10 11:45:43,645 INFO L226 Difference]: Without dead ends: 141048 [2018-09-10 11:45:44,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1092 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:45:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141048 states. [2018-09-10 11:45:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141048 to 136056. [2018-09-10 11:45:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136056 states. [2018-09-10 11:45:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136056 states to 136056 states and 197147 transitions. [2018-09-10 11:45:49,298 INFO L78 Accepts]: Start accepts. Automaton has 136056 states and 197147 transitions. Word has length 273 [2018-09-10 11:45:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:49,298 INFO L480 AbstractCegarLoop]: Abstraction has 136056 states and 197147 transitions. [2018-09-10 11:45:49,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:45:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 136056 states and 197147 transitions. [2018-09-10 11:45:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-10 11:45:49,336 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:49,336 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:49,336 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 11:45:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1092670132, now seen corresponding path program 1 times [2018-09-10 11:45:49,337 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:49,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:49,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:49,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:49,338 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:45:49,691 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:45:49,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:45:49,692 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:49,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:45:49,693 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:45:49,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:45:49,693 INFO L87 Difference]: Start difference. First operand 136056 states and 197147 transitions. Second operand 4 states. [2018-09-10 11:46:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:01,564 INFO L93 Difference]: Finished difference Result 278677 states and 419750 transitions. [2018-09-10 11:46:01,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:46:01,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2018-09-10 11:46:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:02,411 INFO L225 Difference]: With dead ends: 278677 [2018-09-10 11:46:02,411 INFO L226 Difference]: Without dead ends: 165635 [2018-09-10 11:46:02,844 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 11:46:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165635 states. [2018-09-10 11:46:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165635 to 157100. [2018-09-10 11:46:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157100 states. [2018-09-10 11:46:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157100 states to 157100 states and 217897 transitions. [2018-09-10 11:46:08,374 INFO L78 Accepts]: Start accepts. Automaton has 157100 states and 217897 transitions. Word has length 338 [2018-09-10 11:46:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:08,375 INFO L480 AbstractCegarLoop]: Abstraction has 157100 states and 217897 transitions. [2018-09-10 11:46:08,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:46:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 157100 states and 217897 transitions. [2018-09-10 11:46:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-09-10 11:46:08,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:08,427 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, 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] [2018-09-10 11:46:08,427 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 11:46:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash 893725867, now seen corresponding path program 1 times [2018-09-10 11:46:08,428 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:08,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:08,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:08,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:08,429 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:46:08,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:08,775 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:46:08,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:08,783 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:08,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 11:46:09,154 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:46:09,438 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:46:09,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:46:09,439 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:09,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:46:09,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:46:09,440 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:46:09,440 INFO L87 Difference]: Start difference. First operand 157100 states and 217897 transitions. Second operand 5 states. [2018-09-10 11:46:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:23,767 INFO L93 Difference]: Finished difference Result 300276 states and 439513 transitions. [2018-09-10 11:46:23,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:46:23,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2018-09-10 11:46:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:24,286 INFO L225 Difference]: With dead ends: 300276 [2018-09-10 11:46:24,287 INFO L226 Difference]: Without dead ends: 143202 [2018-09-10 11:46:24,552 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 776 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:46:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143202 states. [2018-09-10 11:46:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143202 to 141442. [2018-09-10 11:46:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141442 states. [2018-09-10 11:46:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141442 states to 141442 states and 180242 transitions. [2018-09-10 11:46:27,388 INFO L78 Accepts]: Start accepts. Automaton has 141442 states and 180242 transitions. Word has length 391 [2018-09-10 11:46:27,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:27,389 INFO L480 AbstractCegarLoop]: Abstraction has 141442 states and 180242 transitions. [2018-09-10 11:46:27,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:46:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 141442 states and 180242 transitions. [2018-09-10 11:46:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-09-10 11:46:27,425 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:27,425 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, 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, 1, 1, 1, 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 11:46:27,426 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 11:46:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash 67085382, now seen corresponding path program 1 times [2018-09-10 11:46:27,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:27,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:27,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:27,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:27,427 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-10 11:46:27,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:27,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:46:27,813 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:27,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:46:27,814 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:46:27,814 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:27,814 INFO L87 Difference]: Start difference. First operand 141442 states and 180242 transitions. Second operand 3 states. [2018-09-10 11:46:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:35,448 INFO L93 Difference]: Finished difference Result 304263 states and 396192 transitions. [2018-09-10 11:46:35,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:46:35,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 460 [2018-09-10 11:46:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:36,832 INFO L225 Difference]: With dead ends: 304263 [2018-09-10 11:46:36,832 INFO L226 Difference]: Without dead ends: 163595 [2018-09-10 11:46:37,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163595 states. [2018-09-10 11:46:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163595 to 158930. [2018-09-10 11:46:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158930 states. [2018-09-10 11:46:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158930 states to 158930 states and 199982 transitions. [2018-09-10 11:46:40,236 INFO L78 Accepts]: Start accepts. Automaton has 158930 states and 199982 transitions. Word has length 460 [2018-09-10 11:46:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:40,237 INFO L480 AbstractCegarLoop]: Abstraction has 158930 states and 199982 transitions. [2018-09-10 11:46:40,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:46:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 158930 states and 199982 transitions. [2018-09-10 11:46:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2018-09-10 11:46:40,261 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:40,261 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:40,261 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash 966551221, now seen corresponding path program 1 times [2018-09-10 11:46:40,262 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:40,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:40,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:40,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:40,263 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:41,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:41,182 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 11:46:41,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:41,198 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:41,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:41,925 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:42,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:42,937 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 11:46:42,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:42,953 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:43,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:43,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:46:44,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:46:44,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:46:44,521 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:46:44,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:46:44,524 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:46:44,525 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:46:44,525 INFO L87 Difference]: Start difference. First operand 158930 states and 199982 transitions. Second operand 9 states. [2018-09-10 11:47:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:02,862 INFO L93 Difference]: Finished difference Result 347675 states and 479586 transitions. [2018-09-10 11:47:02,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 11:47:02,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 511 [2018-09-10 11:47:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:03,450 INFO L225 Difference]: With dead ends: 347675 [2018-09-10 11:47:03,450 INFO L226 Difference]: Without dead ends: 180161 [2018-09-10 11:47:04,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2062 GetRequests, 2040 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:47:04,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180161 states. [2018-09-10 11:47:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180161 to 171927. [2018-09-10 11:47:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171927 states. [2018-09-10 11:47:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171927 states to 171927 states and 216176 transitions. [2018-09-10 11:47:07,983 INFO L78 Accepts]: Start accepts. Automaton has 171927 states and 216176 transitions. Word has length 511 [2018-09-10 11:47:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:07,984 INFO L480 AbstractCegarLoop]: Abstraction has 171927 states and 216176 transitions. [2018-09-10 11:47:07,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:47:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 171927 states and 216176 transitions. [2018-09-10 11:47:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-09-10 11:47:08,066 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:08,067 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, 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, 2, 2, 2, 2, 2, 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] [2018-09-10 11:47:08,067 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1206173595, now seen corresponding path program 1 times [2018-09-10 11:47:08,067 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:08,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:08,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:08,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:08,069 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-10 11:47:08,686 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:08,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:47:08,687 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:08,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:47:08,687 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:47:08,688 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:47:08,688 INFO L87 Difference]: Start difference. First operand 171927 states and 216176 transitions. Second operand 4 states. Received shutdown request... [2018-09-10 11:47:13,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:47:13,210 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:47:13,216 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:47:13,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:47:13 BoogieIcfgContainer [2018-09-10 11:47:13,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:47:13,217 INFO L168 Benchmark]: Toolchain (without parser) took 225255.89 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -903.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-10 11:47:13,218 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 11:47:13,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2663.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:13,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 223.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:13,220 INFO L168 Benchmark]: Boogie Preprocessor took 917.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 935.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:13,222 INFO L168 Benchmark]: RCFGBuilder took 13378.52 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 139.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -105.4 MB). Peak memory consumption was 723.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:13,222 INFO L168 Benchmark]: TraceAbstraction took 208065.99 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 121.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-10 11:47:13,230 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 2663.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 223.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 917.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 935.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13378.52 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 139.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -105.4 MB). Peak memory consumption was 723.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208065.99 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 121.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (171927states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (30346 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 207.9s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 170.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3570 SDtfs, 34831 SDslu, 1996 SDs, 0 SdLazy, 70322 SolverSat, 17017 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 127.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4572 GetRequests, 4459 SyntacticMatches, 24 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171927occurred in iteration=11, 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: 24.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 29316 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 5855 NumberOfCodeBlocks, 5855 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8057 ConstructedInterpolants, 0 QuantifiedInterpolants, 8326594 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3604 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 6281/6683 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/Problem12_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-47-13-245.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-47-13-245.csv Completed graceful shutdown