java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label01_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 06:29:50,440 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 06:29:50,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 06:29:50,453 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 06:29:50,453 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 06:29:50,454 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 06:29:50,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 06:29:50,457 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 06:29:50,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 06:29:50,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 06:29:50,461 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 06:29:50,461 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 06:29:50,462 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 06:29:50,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 06:29:50,464 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 06:29:50,464 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 06:29:50,465 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 06:29:50,467 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 06:29:50,469 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 06:29:50,471 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 06:29:50,472 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 06:29:50,473 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 06:29:50,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 06:29:50,481 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 06:29:50,482 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 06:29:50,483 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 06:29:50,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 06:29:50,484 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 06:29:50,499 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 06:29:50,499 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 06:29:50,500 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 06:29:50,500 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 06:29:50,500 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 06:29:50,501 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 06:29:50,501 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 06:29:50,501 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 06:29:50,501 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 06:29:50,501 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 06:29:50,501 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 06:29:50,502 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 06:29:50,502 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 06:29:50,503 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 06:29:50,503 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 06:29:50,503 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 06:29:50,503 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 06:29:50,503 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 06:29:50,503 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 06:29:50,504 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 06:29:50,504 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 06:29:50,504 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 06:29:50,504 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 06:29:50,504 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 06:29:50,505 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 06:29:50,505 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 06:29:50,505 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 06:29:50,505 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 06:29:50,505 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 06:29:50,506 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 06:29:50,506 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 06:29:50,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 06:29:50,506 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 06:29:50,506 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 06:29:50,507 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 06:29:50,553 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 06:29:50,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 06:29:50,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 06:29:50,579 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 06:29:50,580 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 06:29:50,580 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label01_true-unreach-call_false-termination.c [2018-07-21 06:29:50,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/42829c98d/d598443e76f148699ee39f17547a8a1e/FLAG584802bbb [2018-07-21 06:29:51,228 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 06:29:51,229 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label01_true-unreach-call_false-termination.c [2018-07-21 06:29:51,274 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/42829c98d/d598443e76f148699ee39f17547a8a1e/FLAG584802bbb [2018-07-21 06:29:51,297 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/42829c98d/d598443e76f148699ee39f17547a8a1e [2018-07-21 06:29:51,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 06:29:51,319 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 06:29:51,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 06:29:51,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 06:29:51,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 06:29:51,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:29:51" (1/1) ... [2018-07-21 06:29:51,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531a8952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:51, skipping insertion in model container [2018-07-21 06:29:51,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:29:51" (1/1) ... [2018-07-21 06:29:51,575 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 06:29:51,839 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 06:29:51,859 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 06:29:51,995 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 06:29:52,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52 WrapperNode [2018-07-21 06:29:52,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 06:29:52,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 06:29:52,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 06:29:52,045 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 06:29:52,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 06:29:52,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 06:29:52,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 06:29:52,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 06:29:52,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... [2018-07-21 06:29:52,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 06:29:52,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 06:29:52,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 06:29:52,241 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 06:29:52,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 06:29:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 06:29:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 06:29:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 06:29:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 06:29:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 06:29:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 06:29:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 06:29:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 06:29:55,433 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 06:29:55,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:29:55 BoogieIcfgContainer [2018-07-21 06:29:55,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 06:29:55,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 06:29:55,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 06:29:55,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 06:29:55,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:29:51" (1/3) ... [2018-07-21 06:29:55,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270f9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:29:55, skipping insertion in model container [2018-07-21 06:29:55,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:29:52" (2/3) ... [2018-07-21 06:29:55,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270f9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:29:55, skipping insertion in model container [2018-07-21 06:29:55,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:29:55" (3/3) ... [2018-07-21 06:29:55,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label01_true-unreach-call_false-termination.c [2018-07-21 06:29:55,459 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 06:29:55,473 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 06:29:55,527 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 06:29:55,528 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 06:29:55,528 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 06:29:55,528 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 06:29:55,528 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 06:29:55,528 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 06:29:55,529 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 06:29:55,529 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 06:29:55,529 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 06:29:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-21 06:29:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-21 06:29:55,576 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 06:29:55,577 INFO L358 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] [2018-07-21 06:29:55,578 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 06:29:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash 850595888, now seen corresponding path program 1 times [2018-07-21 06:29:55,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 06:29:55,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:29:55,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 06:29:55,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:29:55,629 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 06:29:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 06:29:56,227 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 06:29:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 06:29:56,370 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 06:29:56,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 06:29:56,371 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 06:29:56,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 06:29:56,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 06:29:56,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 06:29:56,395 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-21 06:29:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 06:29:57,733 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-21 06:29:57,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 06:29:57,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2018-07-21 06:29:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 06:29:57,788 INFO L225 Difference]: With dead ends: 550 [2018-07-21 06:29:57,788 INFO L226 Difference]: Without dead ends: 340 [2018-07-21 06:29:57,810 INFO L578 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 [2018-07-21 06:29:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-21 06:29:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-21 06:29:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-21 06:29:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 541 transitions. [2018-07-21 06:29:57,879 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 541 transitions. Word has length 98 [2018-07-21 06:29:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 06:29:57,880 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 541 transitions. [2018-07-21 06:29:57,880 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 06:29:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 541 transitions. [2018-07-21 06:29:57,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-21 06:29:57,886 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 06:29:57,887 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 06:29:57,887 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 06:29:57,887 INFO L82 PathProgramCache]: Analyzing trace with hash 900426319, now seen corresponding path program 1 times [2018-07-21 06:29:57,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 06:29:57,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:29:57,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 06:29:57,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:29:57,889 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 06:29:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 06:29:58,096 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 06:29:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 06:29:58,173 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 06:29:58,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 06:29:58,174 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 06:29:58,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 06:29:58,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 06:29:58,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 06:29:58,177 INFO L87 Difference]: Start difference. First operand 340 states and 541 transitions. Second operand 6 states. [2018-07-21 06:29:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 06:29:59,562 INFO L93 Difference]: Finished difference Result 1075 states and 1784 transitions. [2018-07-21 06:29:59,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 06:29:59,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-07-21 06:29:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 06:29:59,576 INFO L225 Difference]: With dead ends: 1075 [2018-07-21 06:29:59,576 INFO L226 Difference]: Without dead ends: 741 [2018-07-21 06:29:59,579 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 06:29:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-07-21 06:29:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-07-21 06:29:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-07-21 06:29:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1120 transitions. [2018-07-21 06:29:59,643 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1120 transitions. Word has length 109 [2018-07-21 06:29:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 06:29:59,644 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1120 transitions. [2018-07-21 06:29:59,644 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 06:29:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1120 transitions. [2018-07-21 06:29:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-21 06:29:59,657 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 06:29:59,657 INFO L358 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] [2018-07-21 06:29:59,657 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 06:29:59,658 INFO L82 PathProgramCache]: Analyzing trace with hash -774778626, now seen corresponding path program 1 times [2018-07-21 06:29:59,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 06:29:59,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:29:59,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 06:29:59,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:29:59,659 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 06:29:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 06:29:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 06:29:59,890 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 06:29:59,890 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 06:29:59,894 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-07-21 06:29:59,896 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-21 06:29:59,970 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 06:29:59,971 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 06:31:11,951 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 06:31:11,952 INFO L272 AbstractInterpreter]: Visited 102 different actions 170 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-21 06:31:11,968 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 06:31:21,192 INFO L232 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 80.28% of their original sizes. [2018-07-21 06:31:21,193 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 06:31:27,618 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 06:31:27,619 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 06:31:27,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-21 06:31:27,620 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 06:31:27,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-21 06:31:27,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-21 06:31:27,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-21 06:31:27,621 INFO L87 Difference]: Start difference. First operand 724 states and 1120 transitions. Second operand 17 states. [2018-07-21 06:32:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 06:32:09,883 INFO L93 Difference]: Finished difference Result 1960 states and 3101 transitions. [2018-07-21 06:32:09,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-21 06:32:09,884 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 134 [2018-07-21 06:32:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 06:32:09,890 INFO L225 Difference]: With dead ends: 1960 [2018-07-21 06:32:09,890 INFO L226 Difference]: Without dead ends: 781 [2018-07-21 06:32:09,895 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 150 GetRequests, 100 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2018-07-21 06:32:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2018-07-21 06:32:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2018-07-21 06:32:09,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2018-07-21 06:32:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1106 transitions. [2018-07-21 06:32:09,937 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1106 transitions. Word has length 134 [2018-07-21 06:32:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 06:32:09,938 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1106 transitions. [2018-07-21 06:32:09,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-21 06:32:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1106 transitions. [2018-07-21 06:32:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-21 06:32:09,943 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 06:32:09,943 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 06:32:09,943 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 06:32:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash 227427097, now seen corresponding path program 1 times [2018-07-21 06:32:09,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 06:32:09,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:32:09,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 06:32:09,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:32:09,945 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 06:32:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 06:32:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 06:32:10,146 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 06:32:10,146 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 06:32:10,146 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-07-21 06:32:10,147 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-21 06:32:10,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 06:32:10,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 06:32:57,891 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 06:32:57,891 INFO L272 AbstractInterpreter]: Visited 103 different actions 172 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-21 06:32:57,898 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 06:33:04,430 INFO L232 lantSequenceWeakener]: Weakened 145 states. On average, predicates are now at 80.3% of their original sizes. [2018-07-21 06:33:04,431 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 06:33:07,487 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 06:33:07,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 06:33:07,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-07-21 06:33:07,487 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 06:33:07,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-21 06:33:07,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-21 06:33:07,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-07-21 06:33:07,489 INFO L87 Difference]: Start difference. First operand 781 states and 1106 transitions. Second operand 19 states. [2018-07-21 06:33:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 06:33:26,412 INFO L93 Difference]: Finished difference Result 1640 states and 2334 transitions. [2018-07-21 06:33:26,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-21 06:33:26,412 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 147 [2018-07-21 06:33:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 06:33:26,418 INFO L225 Difference]: With dead ends: 1640 [2018-07-21 06:33:26,418 INFO L226 Difference]: Without dead ends: 926 [2018-07-21 06:33:26,421 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 165 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2018-07-21 06:33:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2018-07-21 06:33:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 919. [2018-07-21 06:33:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2018-07-21 06:33:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1249 transitions. [2018-07-21 06:33:26,474 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1249 transitions. Word has length 147 [2018-07-21 06:33:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 06:33:26,474 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1249 transitions. [2018-07-21 06:33:26,474 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-21 06:33:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1249 transitions. [2018-07-21 06:33:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-21 06:33:26,479 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 06:33:26,479 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 06:33:26,479 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 06:33:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1790661037, now seen corresponding path program 1 times [2018-07-21 06:33:26,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 06:33:26,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:33:26,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 06:33:26,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 06:33:26,482 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 06:33:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 06:33:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-21 06:33:26,740 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 06:33:26,740 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 06:33:26,740 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-07-21 06:33:26,741 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [137], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-21 06:33:26,745 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 06:33:26,745 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-21 06:34:05,352 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-21 06:34:05,353 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-21 06:34:05,354 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-21 06:34:05,354 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 06:34:05,354 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-21 06:34:05,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 06:34:05,365 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 06:34:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 06:34:05,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 06:34:05,526 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-21 06:34:05,727 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 06:34:05,728 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 06:34:05,732 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 06:34:05,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 06:34:05 BoogieIcfgContainer [2018-07-21 06:34:05,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 06:34:05,733 INFO L168 Benchmark]: Toolchain (without parser) took 254422.56 ms. Allocated memory was 309.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 252.8 MB in the beginning and 1.1 GB in the end (delta: -876.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-21 06:34:05,734 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 06:34:05,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.08 ms. Allocated memory is still 309.9 MB. Free memory was 250.8 MB in the beginning and 219.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 5.3 GB. [2018-07-21 06:34:05,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.55 ms. Allocated memory is still 309.9 MB. Free memory was 219.0 MB in the beginning and 213.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 5.3 GB. [2018-07-21 06:34:05,735 INFO L168 Benchmark]: Boogie Preprocessor took 93.90 ms. Allocated memory is still 309.9 MB. Free memory was 213.0 MB in the beginning and 209.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. [2018-07-21 06:34:05,736 INFO L168 Benchmark]: RCFGBuilder took 3194.36 ms. Allocated memory was 309.9 MB in the beginning and 484.4 MB in the end (delta: 174.6 MB). Free memory was 209.0 MB in the beginning and 338.9 MB in the end (delta: -129.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 5.3 GB. [2018-07-21 06:34:05,736 INFO L168 Benchmark]: TraceAbstraction took 250294.01 ms. Allocated memory was 484.4 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 338.9 MB in the beginning and 1.1 GB in the end (delta: -790.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-07-21 06:34:05,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 722.08 ms. Allocated memory is still 309.9 MB. Free memory was 250.8 MB in the beginning and 219.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 100.55 ms. Allocated memory is still 309.9 MB. Free memory was 219.0 MB in the beginning and 213.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 93.90 ms. Allocated memory is still 309.9 MB. Free memory was 213.0 MB in the beginning and 209.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 3194.36 ms. Allocated memory was 309.9 MB in the beginning and 484.4 MB in the end (delta: 174.6 MB). Free memory was 209.0 MB in the beginning and 338.9 MB in the end (delta: -129.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 250294.01 ms. Allocated memory was 484.4 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 338.9 MB in the beginning and 1.1 GB in the end (delta: -790.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 449]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 449). Cancelled while BasicCegarLoop was analyzing trace of length 181 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 250.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 64.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 665 SDtfs, 2976 SDslu, 983 SDs, 0 SdLazy, 4305 SolverSat, 786 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 330 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 158.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.993137512020282 AbsIntWeakeningRatio, 0.2724014336917563 AbsIntAvgWeakeningVarsNumRemoved, 509.0716845878136 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 134133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 107/124 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem01_label01_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_06-34-05-754.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem01_label01_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_06-34-05-754.csv Completed graceful shutdown