java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:49:29,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:49:29,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:49:29,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:49:29,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:49:29,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:49:29,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:49:29,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:49:29,788 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:49:29,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:49:29,792 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:49:29,792 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:49:29,794 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:49:29,795 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:49:29,798 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:49:29,799 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:49:29,800 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:49:29,804 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:49:29,808 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:49:29,813 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:49:29,814 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:49:29,816 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:49:29,820 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 22:49:29,828 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 22:49:29,828 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 22:49:29,830 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 22:49:29,831 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 22:49:29,831 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 22:49:29,858 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:49:29,859 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:49:29,859 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:49:29,860 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:49:29,860 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:49:29,860 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:49:29,861 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:49:29,861 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:49:29,861 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:49:29,861 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:49:29,861 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:49:29,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:49:29,863 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:49:29,863 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:49:29,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:49:29,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:49:29,864 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:49:29,864 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:49:29,864 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:49:29,865 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:49:29,865 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:49:29,865 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:49:29,865 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:49:29,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:49:29,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:49:29,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:49:29,868 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:49:29,868 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:49:29,868 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:49:29,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:49:29,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:49:29,869 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:49:29,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:49:29,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:49:29,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:49:29,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:49:29,967 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:49:29,968 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:49:29,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c [2018-07-23 22:49:30,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faeb84179/ddaef9ed48864566be1fc479a64d0f8e/FLAGeaeff4726 [2018-07-23 22:49:30,705 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:49:30,706 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c [2018-07-23 22:49:30,747 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faeb84179/ddaef9ed48864566be1fc479a64d0f8e/FLAGeaeff4726 [2018-07-23 22:49:30,769 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faeb84179/ddaef9ed48864566be1fc479a64d0f8e [2018-07-23 22:49:30,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:49:30,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:49:30,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:49:30,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:49:30,796 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:49:30,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:49:30" (1/1) ... [2018-07-23 22:49:30,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b26fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:30, skipping insertion in model container [2018-07-23 22:49:30,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:49:30" (1/1) ... [2018-07-23 22:49:31,061 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:49:31,671 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:49:31,687 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:49:31,944 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:49:32,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32 WrapperNode [2018-07-23 22:49:32,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:49:32,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:49:32,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:49:32,038 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:49:32,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:49:32,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:49:32,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:49:32,236 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:49:32,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... [2018-07-23 22:49:32,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:49:32,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:49:32,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:49:32,709 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:49:32,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:49:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:49:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:49:32,785 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 [2018-07-23 22:49:32,786 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 [2018-07-23 22:49:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:49:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:49:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:49:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:49:32,786 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 [2018-07-23 22:49:32,787 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 [2018-07-23 22:49:40,114 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:49:40,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:49:40 BoogieIcfgContainer [2018-07-23 22:49:40,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:49:40,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:49:40,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:49:40,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:49:40,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:49:30" (1/3) ... [2018-07-23 22:49:40,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737ceded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:49:40, skipping insertion in model container [2018-07-23 22:49:40,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:49:32" (2/3) ... [2018-07-23 22:49:40,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737ceded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:49:40, skipping insertion in model container [2018-07-23 22:49:40,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:49:40" (3/3) ... [2018-07-23 22:49:40,125 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label26_true-unreach-call.c [2018-07-23 22:49:40,137 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:49:40,152 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:49:40,213 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:49:40,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:49:40,215 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:49:40,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:49:40,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:49:40,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:49:40,215 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:49:40,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:49:40,216 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:49:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-23 22:49:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 22:49:40,269 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:49:40,271 INFO L353 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] [2018-07-23 22:49:40,271 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:49:40,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1481295564, now seen corresponding path program 1 times [2018-07-23 22:49:40,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:49:40,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:49:40,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:49:40,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:49:40,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:49:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:49:40,797 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:49:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:49:40,913 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:49:40,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 22:49:40,913 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:49:40,919 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 22:49:40,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 22:49:40,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:49:40,938 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-23 22:49:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:49:44,699 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-23 22:49:44,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 22:49:44,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-07-23 22:49:44,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:49:44,734 INFO L225 Difference]: With dead ends: 1156 [2018-07-23 22:49:44,734 INFO L226 Difference]: Without dead ends: 744 [2018-07-23 22:49:44,745 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:49:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-23 22:49:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-23 22:49:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-23 22:49:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-07-23 22:49:44,856 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 42 [2018-07-23 22:49:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:49:44,857 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-07-23 22:49:44,857 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 22:49:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-07-23 22:49:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 22:49:44,866 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:49:44,867 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:49:44,867 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:49:44,868 INFO L82 PathProgramCache]: Analyzing trace with hash 525328054, now seen corresponding path program 1 times [2018-07-23 22:49:44,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:49:44,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:49:44,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:49:44,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:49:44,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:49:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:49:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:49:45,200 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:49:45,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:49:45,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:49:45,202 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:49:45,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:49:45,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:49:45,203 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-07-23 22:49:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:49:53,976 INFO L93 Difference]: Finished difference Result 2185 states and 3967 transitions. [2018-07-23 22:49:53,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:49:53,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-07-23 22:49:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:49:53,992 INFO L225 Difference]: With dead ends: 2185 [2018-07-23 22:49:53,992 INFO L226 Difference]: Without dead ends: 1447 [2018-07-23 22:49:53,996 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:49:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2018-07-23 22:49:54,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1442. [2018-07-23 22:49:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2018-07-23 22:49:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2383 transitions. [2018-07-23 22:49:54,079 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2383 transitions. Word has length 150 [2018-07-23 22:49:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:49:54,080 INFO L471 AbstractCegarLoop]: Abstraction has 1442 states and 2383 transitions. [2018-07-23 22:49:54,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:49:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2383 transitions. [2018-07-23 22:49:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-23 22:49:54,101 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:49:54,101 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 22:49:54,102 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:49:54,102 INFO L82 PathProgramCache]: Analyzing trace with hash 352031400, now seen corresponding path program 1 times [2018-07-23 22:49:54,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:49:54,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:49:54,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:49:54,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:49:54,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:49:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:49:54,576 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:49:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 70 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 22:49:54,683 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:49:54,683 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:49:54,684 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-07-23 22:49:54,687 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [647], [651], [655], [659], [663], [667], [671], [675], [678], [1374], [1378], [1382], [1388], [1392], [1394], [1579], [1580], [1581], [1583], [1584] [2018-07-23 22:49:54,766 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:49:54,769 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:50:00,170 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:50:00,172 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 22:50:00,225 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:50:04,817 INFO L232 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 77.77% of their original sizes. [2018-07-23 22:50:04,818 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:50:05,274 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:50:05,277 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:50:05,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 22:50:05,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:50:05,278 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 22:50:05,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 22:50:05,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 22:50:05,279 INFO L87 Difference]: Start difference. First operand 1442 states and 2383 transitions. Second operand 7 states. [2018-07-23 22:50:08,196 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:50:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:50:57,292 INFO L93 Difference]: Finished difference Result 3218 states and 5265 transitions. [2018-07-23 22:50:57,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:50:57,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2018-07-23 22:50:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:50:57,302 INFO L225 Difference]: With dead ends: 3218 [2018-07-23 22:50:57,303 INFO L226 Difference]: Without dead ends: 1782 [2018-07-23 22:50:57,308 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 22:50:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2018-07-23 22:50:57,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1780. [2018-07-23 22:50:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2018-07-23 22:50:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2728 transitions. [2018-07-23 22:50:57,361 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2728 transitions. Word has length 266 [2018-07-23 22:50:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:50:57,361 INFO L471 AbstractCegarLoop]: Abstraction has 1780 states and 2728 transitions. [2018-07-23 22:50:57,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 22:50:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2728 transitions. [2018-07-23 22:50:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-23 22:50:57,370 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:50:57,370 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-23 22:50:57,370 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:50:57,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1032454838, now seen corresponding path program 1 times [2018-07-23 22:50:57,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:50:57,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:50:57,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:50:57,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:50:57,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:50:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:50:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 200 proven. 107 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-23 22:50:58,057 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:50:58,058 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:50:58,058 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 359 with the following transitions: [2018-07-23 22:50:58,059 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [647], [651], [655], [659], [663], [667], [671], [675], [678], [1374], [1378], [1382], [1388], [1392], [1394], [1579], [1580], [1581], [1583], [1584] [2018-07-23 22:50:58,072 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:50:58,072 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:51:00,361 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:51:09,168 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:51:09,169 INFO L272 AbstractInterpreter]: Visited 125 different actions 243 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 22:51:09,178 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:51:17,131 INFO L232 lantSequenceWeakener]: Weakened 356 states. On average, predicates are now at 77.7% of their original sizes. [2018-07-23 22:51:17,131 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:51:18,867 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:51:18,867 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:51:18,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-07-23 22:51:18,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:51:18,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:51:18,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:51:18,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:51:18,870 INFO L87 Difference]: Start difference. First operand 1780 states and 2728 transitions. Second operand 11 states. [2018-07-23 22:53:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:53:13,839 INFO L93 Difference]: Finished difference Result 3898 states and 6120 transitions. [2018-07-23 22:53:13,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 22:53:13,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 358 [2018-07-23 22:53:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:53:13,853 INFO L225 Difference]: With dead ends: 3898 [2018-07-23 22:53:13,853 INFO L226 Difference]: Without dead ends: 2462 [2018-07-23 22:53:13,859 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 364 GetRequests, 318 SyntacticMatches, 30 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 22:53:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2018-07-23 22:53:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2459. [2018-07-23 22:53:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2018-07-23 22:53:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3425 transitions. [2018-07-23 22:53:13,933 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3425 transitions. Word has length 358 [2018-07-23 22:53:13,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:53:13,933 INFO L471 AbstractCegarLoop]: Abstraction has 2459 states and 3425 transitions. [2018-07-23 22:53:13,934 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 22:53:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3425 transitions. [2018-07-23 22:53:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-23 22:53:13,943 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:53:13,943 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:53:13,944 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:53:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash 451236802, now seen corresponding path program 1 times [2018-07-23 22:53:13,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:53:13,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:53:13,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:53:13,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:53:13,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:53:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:53:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 224 proven. 107 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-23 22:53:15,403 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:53:15,403 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:53:15,403 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 395 with the following transitions: [2018-07-23 22:53:15,403 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [726], [1374], [1378], [1382], [1388], [1392], [1394], [1579], [1580], [1581], [1583], [1584] [2018-07-23 22:53:15,410 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:53:15,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:53:19,623 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-23 22:53:21,070 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 22:53:21,071 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 22:53:21,072 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 22:53:21,073 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:53:21,073 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 22:53:21,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:53:21,087 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 22:53:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:53:21,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 22:53:21,277 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 22:53:21,478 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 22:53:21,479 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 22:53:21,485 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 22:53:21,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 10:53:21 BoogieIcfgContainer [2018-07-23 22:53:21,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 22:53:21,487 INFO L168 Benchmark]: Toolchain (without parser) took 230703.07 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 548.5 MB. Max. memory is 7.1 GB. [2018-07-23 22:53:21,488 INFO L168 Benchmark]: CDTParser took 0.30 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. [2018-07-23 22:53:21,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1250.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-23 22:53:21,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 198.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2018-07-23 22:53:21,490 INFO L168 Benchmark]: Boogie Preprocessor took 472.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -982.0 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2018-07-23 22:53:21,491 INFO L168 Benchmark]: RCFGBuilder took 7406.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 279.4 MB). Peak memory consumption was 279.4 MB. Max. memory is 7.1 GB. [2018-07-23 22:53:21,492 INFO L168 Benchmark]: TraceAbstraction took 221368.82 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. [2018-07-23 22:53:21,497 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 1250.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 198.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 472.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -982.0 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7406.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 279.4 MB). Peak memory consumption was 279.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221368.82 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 112). Cancelled while BasicCegarLoop was analyzing trace of length 395 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 221.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 179.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1047 SDtfs, 4415 SDslu, 787 SDs, 0 SdLazy, 6570 SolverSat, 1635 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 120.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 645 GetRequests, 582 SyntacticMatches, 33 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2459occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9960709958525559 AbsIntWeakeningRatio, 0.0932475884244373 AbsIntAvgWeakeningVarsNumRemoved, 399.2604501607717 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 816 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 812 ConstructedInterpolants, 0 QuantifiedInterpolants, 579945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 400/610 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/Problem16_label26_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_22-53-21-513.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label26_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_22-53-21-513.csv Completed graceful shutdown