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_label01_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:13:52,023 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:13:52,025 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:13:52,039 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:13:52,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:13:52,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:13:52,042 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:13:52,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:13:52,045 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:13:52,046 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:13:52,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:13:52,047 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:13:52,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:13:52,049 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:13:52,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:13:52,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:13:52,053 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:13:52,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:13:52,063 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:13:52,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:13:52,068 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:13:52,069 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:13:52,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:13:52,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:13:52,076 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:13:52,079 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:13:52,080 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:13:52,080 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:13:52,081 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:13:52,082 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:13:52,082 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:13:52,083 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:13:52,083 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:13:52,083 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:13:52,084 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:13:52,085 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:13:52,086 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 20:13:52,101 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:13:52,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:13:52,102 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:13:52,102 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:13:52,102 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:13:52,102 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:13:52,102 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:13:52,103 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:13:52,103 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:13:52,103 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:13:52,103 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:13:52,104 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:13:52,104 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:13:52,104 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:13:52,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:13:52,105 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:13:52,105 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:13:52,105 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:13:52,105 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:13:52,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:13:52,106 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:13:52,106 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:13:52,106 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:13:52,106 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:13:52,107 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:13:52,107 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:13:52,107 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:13:52,107 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:13:52,107 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:13:52,108 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:13:52,108 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:13:52,108 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:13:52,108 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:13:52,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:13:52,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:13:52,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:13:52,199 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:13:52,199 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:13:52,200 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label01_true-unreach-call_false-termination.c [2018-07-23 20:13:52,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b69aaf1/733ef836756547c2a312101c1d958c73/FLAGc3ccbc6f1 [2018-07-23 20:13:52,846 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:13:52,847 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label01_true-unreach-call_false-termination.c [2018-07-23 20:13:52,869 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b69aaf1/733ef836756547c2a312101c1d958c73/FLAGc3ccbc6f1 [2018-07-23 20:13:52,890 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b69aaf1/733ef836756547c2a312101c1d958c73 [2018-07-23 20:13:52,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:13:52,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:13:52,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:13:52,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:13:52,909 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:13:52,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:13:52" (1/1) ... [2018-07-23 20:13:52,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9c81f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:52, skipping insertion in model container [2018-07-23 20:13:52,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:13:52" (1/1) ... [2018-07-23 20:13:53,159 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:13:53,471 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:13:53,491 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:13:53,595 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:13:53,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53 WrapperNode [2018-07-23 20:13:53,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:13:53,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:13:53,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:13:53,635 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:13:53,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:13:53,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:13:53,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:13:53,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:13:53,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (1/1) ... [2018-07-23 20:13:53,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:13:53,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:13:53,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:13:53,954 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:13:53,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (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 20:13:54,047 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 20:13:54,048 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 20:13:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:13:54,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:13:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:13:54,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:13:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:13:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:13:57,456 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:13:57,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:13:57 BoogieIcfgContainer [2018-07-23 20:13:57,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:13:57,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:13:57,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:13:57,461 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:13:57,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:13:52" (1/3) ... [2018-07-23 20:13:57,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa3b46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:13:57, skipping insertion in model container [2018-07-23 20:13:57,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:53" (2/3) ... [2018-07-23 20:13:57,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa3b46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:13:57, skipping insertion in model container [2018-07-23 20:13:57,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:13:57" (3/3) ... [2018-07-23 20:13:57,466 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label01_true-unreach-call_false-termination.c [2018-07-23 20:13:57,477 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:13:57,486 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:13:57,544 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:13:57,545 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:13:57,546 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:13:57,546 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:13:57,546 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:13:57,546 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:13:57,546 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:13:57,547 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:13:57,547 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:13:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:13:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 20:13:57,586 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:13:57,587 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] [2018-07-23 20:13:57,588 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 20:13:57,594 INFO L82 PathProgramCache]: Analyzing trace with hash 764671664, now seen corresponding path program 1 times [2018-07-23 20:13:57,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:13:57,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:57,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:13:57,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:57,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:13:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:13:58,131 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:13:58,181 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 20:13:58,184 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:13:58,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:13:58,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:13:58,191 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:13:58,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:13:58,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:13:58,210 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:13:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:13:59,756 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:13:59,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:13:59,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2018-07-23 20:13:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:13:59,781 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:13:59,781 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:13:59,791 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:13:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:13:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:13:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:13:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 20:13:59,871 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 98 [2018-07-23 20:13:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:13:59,872 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 20:13:59,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:13:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 20:13:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 20:13:59,881 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:13:59,881 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] [2018-07-23 20:13:59,881 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 20:13:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1435390247, now seen corresponding path program 1 times [2018-07-23 20:13:59,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:13:59,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:59,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:13:59,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:59,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:13:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:00,095 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 20:14:00,095 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:00,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:14:00,096 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:00,098 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:14:00,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:14:00,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:14:00,099 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-07-23 20:14:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:02,187 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-07-23 20:14:02,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:14:02,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-07-23 20:14:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:02,198 INFO L225 Difference]: With dead ends: 1079 [2018-07-23 20:14:02,199 INFO L226 Difference]: Without dead ends: 745 [2018-07-23 20:14:02,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:14:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-07-23 20:14:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-07-23 20:14:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-07-23 20:14:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-07-23 20:14:02,253 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 108 [2018-07-23 20:14:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:02,253 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-07-23 20:14:02,254 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:14:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-07-23 20:14:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 20:14:02,260 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:02,261 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:02,261 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 20:14:02,261 INFO L82 PathProgramCache]: Analyzing trace with hash 397468798, now seen corresponding path program 1 times [2018-07-23 20:14:02,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:02,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:02,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:02,479 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:14:02,480 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:14:02,481 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-07-23 20:14:02,483 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [63], [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], [419], [421], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:14:02,547 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:14:02,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:15:37,856 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:15:37,858 INFO L272 AbstractInterpreter]: Visited 102 different actions 167 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 20:15:37,886 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:15:50,684 INFO L232 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 80.28% of their original sizes. [2018-07-23 20:15:50,685 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:15:54,003 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:15:54,004 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:15:54,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:15:54,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:15:54,005 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:15:54,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:15:54,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:15:54,008 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 17 states. [2018-07-23 20:16:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:16:30,432 INFO L93 Difference]: Finished difference Result 1705 states and 2717 transitions. [2018-07-23 20:16:30,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:16:30,432 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2018-07-23 20:16:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:16:30,438 INFO L225 Difference]: With dead ends: 1705 [2018-07-23 20:16:30,438 INFO L226 Difference]: Without dead ends: 793 [2018-07-23 20:16:30,441 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:16:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-07-23 20:16:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2018-07-23 20:16:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-07-23 20:16:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1153 transitions. [2018-07-23 20:16:30,479 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1153 transitions. Word has length 134 [2018-07-23 20:16:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:16:30,480 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1153 transitions. [2018-07-23 20:16:30,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:16:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1153 transitions. [2018-07-23 20:16:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 20:16:30,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:16:30,487 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:30,487 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 20:16:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 629002467, now seen corresponding path program 1 times [2018-07-23 20:16:30,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:16:30,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:16:30,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:16:30,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:16:30,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:16:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:16:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-23 20:16:30,708 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:16:30,708 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:16:30,708 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-07-23 20:16:30,709 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [19], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [63], [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], [419], [421], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:16:30,719 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:16:30,719 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:18:15,543 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:18:15,544 INFO L272 AbstractInterpreter]: Visited 103 different actions 170 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:18:15,549 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown