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/Problem01_label55_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:23:50,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:23:50,107 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:23:50,130 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:23:50,131 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:23:50,132 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:23:50,136 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:23:50,138 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:23:50,142 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:23:50,143 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:23:50,146 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:23:50,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:23:50,148 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:23:50,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:23:50,156 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:23:50,157 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:23:50,158 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:23:50,167 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:23:50,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:23:50,175 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:23:50,176 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:23:50,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:23:50,187 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 20:23:50,199 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:23:50,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:23:50,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:23:50,204 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:23:50,205 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 20:23:50,235 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:23:50,235 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:23:50,237 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:23:50,237 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:23:50,237 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:23:50,238 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:23:50,238 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:23:50,238 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:23:50,239 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:23:50,239 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:23:50,239 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:23:50,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:23:50,240 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:23:50,241 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:23:50,241 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:23:50,241 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:23:50,241 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:23:50,243 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:23:50,244 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:23:50,244 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:23:50,244 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:23:50,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:23:50,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:23:50,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:23:50,245 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:23:50,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:23:50,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:23:50,246 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:23:50,247 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:23:50,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:23:50,247 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:23:50,247 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:23:50,248 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:23:50,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:23:50,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:23:50,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:23:50,345 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:23:50,346 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:23:50,347 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55_true-unreach-call_false-termination.c [2018-07-23 20:23:50,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dffdb5c5/2f0c1e210243483cb99c93f01e4f7d1d/FLAG740cc1559 [2018-07-23 20:23:51,045 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:23:51,051 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label55_true-unreach-call_false-termination.c [2018-07-23 20:23:51,074 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dffdb5c5/2f0c1e210243483cb99c93f01e4f7d1d/FLAG740cc1559 [2018-07-23 20:23:51,092 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dffdb5c5/2f0c1e210243483cb99c93f01e4f7d1d [2018-07-23 20:23:51,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:23:51,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:23:51,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:23:51,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:23:51,115 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:23:51,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:51,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354724a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51, skipping insertion in model container [2018-07-23 20:23:51,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:51,412 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:23:51,710 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:23:51,735 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:23:51,853 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:23:51,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51 WrapperNode [2018-07-23 20:23:51,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:23:51,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:23:51,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:23:51,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:23:51,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:51,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:23:52,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:23:52,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:23:52,016 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:23:52,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (1/1) ... [2018-07-23 20:23:52,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:23:52,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:23:52,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:23:52,259 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:23:52,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (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 20:23:52,348 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:23:52,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:23:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:23:52,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:23:52,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:23:52,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:23:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:23:52,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:23:55,799 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:23:55,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:23:55 BoogieIcfgContainer [2018-07-23 20:23:55,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:23:55,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:23:55,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:23:55,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:23:55,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:23:51" (1/3) ... [2018-07-23 20:23:55,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198e7c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:23:55, skipping insertion in model container [2018-07-23 20:23:55,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:51" (2/3) ... [2018-07-23 20:23:55,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198e7c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:23:55, skipping insertion in model container [2018-07-23 20:23:55,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:23:55" (3/3) ... [2018-07-23 20:23:55,819 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label55_true-unreach-call_false-termination.c [2018-07-23 20:23:55,835 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:23:55,847 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:23:55,924 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:23:55,925 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:23:55,925 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:23:55,925 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:23:55,925 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:23:55,925 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:23:55,925 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:23:55,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:23:55,926 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:23:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:23:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 20:23:55,968 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:55,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:55,970 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:23:55,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1580870848, now seen corresponding path program 1 times [2018-07-23 20:23:55,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:56,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:56,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:56,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:56,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:56,634 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:23:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:56,800 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:56,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:23:56,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:56,808 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:23:56,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:23:56,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:23:56,830 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:23:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:58,906 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:23:58,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:23:58,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2018-07-23 20:23:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:58,928 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:23:58,929 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:23:58,936 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 20:23:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:23:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:23:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:23:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 20:23:59,023 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 118 [2018-07-23 20:23:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:59,024 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 20:23:59,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:23:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 20:23:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 20:23:59,037 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:59,037 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:23:59,038 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:23:59,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1721607607, now seen corresponding path program 1 times [2018-07-23 20:23:59,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:59,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:59,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:59,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:59,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:59,299 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:23:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:59,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:59,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:23:59,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:59,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:23:59,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:23:59,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:23:59,440 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-07-23 20:24:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:01,545 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-07-23 20:24:01,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:24:01,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-07-23 20:24:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:01,559 INFO L225 Difference]: With dead ends: 1079 [2018-07-23 20:24:01,559 INFO L226 Difference]: Without dead ends: 745 [2018-07-23 20:24:01,564 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:24:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-07-23 20:24:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-07-23 20:24:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-07-23 20:24:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-07-23 20:24:01,638 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 128 [2018-07-23 20:24:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:01,638 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-07-23 20:24:01,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:24:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-07-23 20:24:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 20:24:01,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:01,645 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:24:01,645 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:24:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2113905437, now seen corresponding path program 1 times [2018-07-23 20:24:01,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:01,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:01,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:01,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:01,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:24:01,962 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:01,963 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:24:01,964 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 139 with the following transitions: [2018-07-23 20:24:01,966 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [47], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [579], [581], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:24:02,045 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:24:02,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:24:23,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:24:23,173 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 20:24:23,186 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:24:27,185 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.74% of their original sizes. [2018-07-23 20:24:27,186 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:24:28,602 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:24:28,603 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:24:28,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2018-07-23 20:24:28,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:24:28,605 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 20:24:28,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 20:24:28,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 20:24:28,605 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 12 states. [2018-07-23 20:24:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:24:42,358 INFO L93 Difference]: Finished difference Result 1521 states and 2423 transitions. [2018-07-23 20:24:42,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 20:24:42,359 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2018-07-23 20:24:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:24:42,364 INFO L225 Difference]: With dead ends: 1521 [2018-07-23 20:24:42,365 INFO L226 Difference]: Without dead ends: 794 [2018-07-23 20:24:42,368 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 143 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 20:24:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2018-07-23 20:24:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2018-07-23 20:24:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2018-07-23 20:24:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1232 transitions. [2018-07-23 20:24:42,407 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1232 transitions. Word has length 138 [2018-07-23 20:24:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:24:42,407 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1232 transitions. [2018-07-23 20:24:42,407 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 20:24:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1232 transitions. [2018-07-23 20:24:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 20:24:42,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:24:42,413 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:24:42,413 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:24:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1014249770, now seen corresponding path program 1 times [2018-07-23 20:24:42,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:24:42,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:42,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:24:42,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:24:42,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:24:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:24:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:24:42,850 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:24:42,850 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:24:42,851 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-07-23 20:24:42,851 INFO L201 CegarAbsIntRunner]: [0], [4], [7], [8], [12], [15], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [579], [581], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:24:42,858 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:24:42,858 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:26:26,462 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:26:26,463 INFO L272 AbstractInterpreter]: Visited 108 different actions 173 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:26:26,474 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:26:37,266 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 80.42% of their original sizes. [2018-07-23 20:26:37,267 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:26:40,227 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:26:40,228 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:26:40,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:26:40,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:26:40,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:26:40,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:26:40,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:26:40,230 INFO L87 Difference]: Start difference. First operand 794 states and 1232 transitions. Second operand 17 states. [2018-07-23 20:27:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:27:11,266 INFO L93 Difference]: Finished difference Result 1705 states and 2683 transitions. [2018-07-23 20:27:11,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:27:11,267 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 140 [2018-07-23 20:27:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:27:11,272 INFO L225 Difference]: With dead ends: 1705 [2018-07-23 20:27:11,272 INFO L226 Difference]: Without dead ends: 793 [2018-07-23 20:27:11,275 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:27:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-07-23 20:27:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2018-07-23 20:27:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-07-23 20:27:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1153 transitions. [2018-07-23 20:27:11,307 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1153 transitions. Word has length 140 [2018-07-23 20:27:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:27:11,307 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1153 transitions. [2018-07-23 20:27:11,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:27:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1153 transitions. [2018-07-23 20:27:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-23 20:27:11,311 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:27:11,311 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:27:11,312 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:27:11,312 INFO L82 PathProgramCache]: Analyzing trace with hash 19635396, now seen corresponding path program 1 times [2018-07-23 20:27:11,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:27:11,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:27:11,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:27:11,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:27:11,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:27:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:27:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:27:11,531 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:27:11,531 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:27:11,531 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-07-23 20:27:11,532 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [47], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [579], [581], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:27:11,537 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:27:11,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:28:10,459 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:28:10,460 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:28:10,461 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:28:10,461 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:28:10,461 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 20:28:10,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:28:10,474 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:28:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:28:10,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:28:10,639 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:28:10,841 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:28:10,842 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:28:10,849 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:28:10,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:28:10 BoogieIcfgContainer [2018-07-23 20:28:10,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:28:10,851 INFO L168 Benchmark]: Toolchain (without parser) took 259745.78 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -371.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-23 20:28:10,852 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:28:10,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:10,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:10,854 INFO L168 Benchmark]: Boogie Preprocessor took 239.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:10,855 INFO L168 Benchmark]: RCFGBuilder took 3541.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.5 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2018-07-23 20:28:10,856 INFO L168 Benchmark]: TraceAbstraction took 255045.63 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 805.3 MB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 299.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 20:28:10,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 786.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 121.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 239.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3541.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.5 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255045.63 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 805.3 MB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 299.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 509]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 509). Cancelled while BasicCegarLoop was analyzing trace of length 148 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 254.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 49.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 728 SDtfs, 1819 SDslu, 544 SDs, 0 SdLazy, 2541 SolverSat, 548 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 312 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 183.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9942853776363854 AbsIntWeakeningRatio, 0.2318840579710145 AbsIntAvgWeakeningVarsNumRemoved, 979.768115942029 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 177726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 31/50 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/Problem01_label55_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-28-10-884.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label55_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-28-10-884.csv Completed graceful shutdown