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_label37_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:21:42,636 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:21:42,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:21:42,651 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:21:42,651 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:21:42,653 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:21:42,654 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:21:42,656 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:21:42,659 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:21:42,660 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:21:42,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:21:42,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:21:42,662 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:21:42,663 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:21:42,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:21:42,665 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:21:42,666 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:21:42,668 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:21:42,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:21:42,672 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:21:42,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:21:42,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:21:42,678 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 18:21:42,689 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 18:21:42,706 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:21:42,707 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:21:42,708 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:21:42,708 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:21:42,708 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:21:42,709 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:21:42,709 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:21:42,709 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:21:42,710 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:21:42,710 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:21:42,710 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:21:42,711 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:21:42,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:21:42,712 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:21:42,712 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:21:42,712 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:21:42,713 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:21:42,713 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:21:42,713 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:21:42,714 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:21:42,714 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:21:42,714 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:21:42,714 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:21:42,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:21:42,715 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:21:42,715 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:21:42,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:21:42,716 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:21:42,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:21:42,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:21:42,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:21:42,717 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:21:42,717 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:21:42,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:21:42,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:21:42,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:21:42,787 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:21:42,787 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:21:42,788 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label37_false-unreach-call_false-termination.c [2018-07-23 18:21:43,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3abd09d/c292606eb1164abb91c34844f512a07c/FLAG91a252987 [2018-07-23 18:21:43,398 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:21:43,399 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label37_false-unreach-call_false-termination.c [2018-07-23 18:21:43,433 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3abd09d/c292606eb1164abb91c34844f512a07c/FLAG91a252987 [2018-07-23 18:21:43,452 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3abd09d/c292606eb1164abb91c34844f512a07c [2018-07-23 18:21:43,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:21:43,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:21:43,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:21:43,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:21:43,479 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:21:43,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:21:43" (1/1) ... [2018-07-23 18:21:43,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da9c5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:43, skipping insertion in model container [2018-07-23 18:21:43,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:21:43" (1/1) ... [2018-07-23 18:21:43,755 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:21:44,097 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:21:44,124 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:21:44,214 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:21:44,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44 WrapperNode [2018-07-23 18:21:44,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:21:44,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:21:44,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:21:44,253 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:21:44,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:21:44,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:21:44,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:21:44,369 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:21:44,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (1/1) ... [2018-07-23 18:21:44,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:21:44,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:21:44,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:21:44,592 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:21:44,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (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 18:21:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:21:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:21:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:21:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:21:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:21:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:21:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 18:21:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 18:21:48,312 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:21:48,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:21:48 BoogieIcfgContainer [2018-07-23 18:21:48,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:21:48,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:21:48,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:21:48,319 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:21:48,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:21:43" (1/3) ... [2018-07-23 18:21:48,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f57015e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:21:48, skipping insertion in model container [2018-07-23 18:21:48,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:21:44" (2/3) ... [2018-07-23 18:21:48,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f57015e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:21:48, skipping insertion in model container [2018-07-23 18:21:48,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:21:48" (3/3) ... [2018-07-23 18:21:48,324 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label37_false-unreach-call_false-termination.c [2018-07-23 18:21:48,335 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:21:48,345 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:21:48,405 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:21:48,406 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:21:48,406 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:21:48,406 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:21:48,407 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:21:48,407 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:21:48,407 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:21:48,407 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:21:48,408 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:21:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 18:21:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 18:21:48,449 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:21:48,453 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] [2018-07-23 18:21:48,453 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:21:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 344345584, now seen corresponding path program 1 times [2018-07-23 18:21:48,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:21:48,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:21:48,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:21:48,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:21:48,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:21:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:21:49,106 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:21:49,197 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 18:21:49,199 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:21:49,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:21:49,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:21:49,207 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:21:49,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:21:49,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:21:49,230 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 18:21:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:21:50,916 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 18:21:50,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:21:50,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2018-07-23 18:21:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:21:50,941 INFO L225 Difference]: With dead ends: 550 [2018-07-23 18:21:50,941 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 18:21:50,948 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:21:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 18:21:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 18:21:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 18:21:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 18:21:51,038 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 82 [2018-07-23 18:21:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:21:51,039 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 18:21:51,039 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:21:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 18:21:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 18:21:51,045 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:21:51,046 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] [2018-07-23 18:21:51,046 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:21:51,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1323001831, now seen corresponding path program 1 times [2018-07-23 18:21:51,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:21:51,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:21:51,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:21:51,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:21:51,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:21:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:21:51,286 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:21:51,334 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 18:21:51,334 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:21:51,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 18:21:51,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:21:51,337 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:21:51,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:21:51,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:21:51,338 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 6 states. [2018-07-23 18:21:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:21:53,667 INFO L93 Difference]: Finished difference Result 1076 states and 1881 transitions. [2018-07-23 18:21:53,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 18:21:53,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-07-23 18:21:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:21:53,685 INFO L225 Difference]: With dead ends: 1076 [2018-07-23 18:21:53,686 INFO L226 Difference]: Without dead ends: 742 [2018-07-23 18:21:53,693 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:21:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2018-07-23 18:21:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 730. [2018-07-23 18:21:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2018-07-23 18:21:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1155 transitions. [2018-07-23 18:21:53,753 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1155 transitions. Word has length 92 [2018-07-23 18:21:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:21:53,753 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1155 transitions. [2018-07-23 18:21:53,753 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:21:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1155 transitions. [2018-07-23 18:21:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 18:21:53,763 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:21:53,763 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:21:53,764 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:21:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash 589579603, now seen corresponding path program 1 times [2018-07-23 18:21:53,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:21:53,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:21:53,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:21:53,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:21:53,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:21:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:21:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:21:54,216 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:21:54,216 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:21:54,217 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-07-23 18:21:54,220 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [73], [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], [270], [274], [278], [282], [286], [290], [297], [305], [313], [317], [319], [781], [782], [783], [784], [786], [787] [2018-07-23 18:21:54,296 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:21:54,296 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:22:11,879 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:22:11,880 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 18:22:11,893 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:22:14,710 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.74% of their original sizes. [2018-07-23 18:22:14,710 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:22:16,017 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:22:16,018 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:22:16,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2018-07-23 18:22:16,019 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:22:16,019 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 18:22:16,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 18:22:16,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:22:16,020 INFO L87 Difference]: Start difference. First operand 730 states and 1155 transitions. Second operand 12 states. [2018-07-23 18:22:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:22:33,015 INFO L93 Difference]: Finished difference Result 1515 states and 2407 transitions. [2018-07-23 18:22:33,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 18:22:33,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2018-07-23 18:22:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:22:33,021 INFO L225 Difference]: With dead ends: 1515 [2018-07-23 18:22:33,022 INFO L226 Difference]: Without dead ends: 791 [2018-07-23 18:22:33,025 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 18:22:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2018-07-23 18:22:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2018-07-23 18:22:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-07-23 18:22:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1224 transitions. [2018-07-23 18:22:33,070 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1224 transitions. Word has length 102 [2018-07-23 18:22:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:22:33,071 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1224 transitions. [2018-07-23 18:22:33,071 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 18:22:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1224 transitions. [2018-07-23 18:22:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 18:22:33,076 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:22:33,077 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:22:33,077 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:22:33,077 INFO L82 PathProgramCache]: Analyzing trace with hash -747466854, now seen corresponding path program 1 times [2018-07-23 18:22:33,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:22:33,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:33,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:22:33,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:22:33,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:22:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:22:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:22:33,509 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:22:33,510 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:22:33,510 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2018-07-23 18:22:33,510 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [30], [33], [34], [38], [41], [42], [46], [50], [54], [58], [62], [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], [270], [274], [278], [282], [286], [290], [297], [305], [313], [317], [319], [781], [782], [783], [784], [786], [787] [2018-07-23 18:22:33,517 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:22:33,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 18:23:52,138 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 18:23:52,139 INFO L272 AbstractInterpreter]: Visited 86 different actions 151 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 18:23:52,156 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 18:24:02,135 INFO L232 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 79.97% of their original sizes. [2018-07-23 18:24:02,136 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 18:24:05,051 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 18:24:05,051 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 18:24:05,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 18:24:05,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:24:05,052 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 18:24:05,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 18:24:05,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 18:24:05,053 INFO L87 Difference]: Start difference. First operand 791 states and 1224 transitions. Second operand 17 states. [2018-07-23 18:24:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:24:47,686 INFO L93 Difference]: Finished difference Result 1699 states and 2677 transitions. [2018-07-23 18:24:47,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 18:24:47,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2018-07-23 18:24:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:24:47,692 INFO L225 Difference]: With dead ends: 1699 [2018-07-23 18:24:47,692 INFO L226 Difference]: Without dead ends: 790 [2018-07-23 18:24:47,696 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 119 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 18:24:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-07-23 18:24:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2018-07-23 18:24:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2018-07-23 18:24:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1145 transitions. [2018-07-23 18:24:47,730 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1145 transitions. Word has length 104 [2018-07-23 18:24:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:24:47,731 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1145 transitions. [2018-07-23 18:24:47,731 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 18:24:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1145 transitions. [2018-07-23 18:24:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 18:24:47,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:24:47,735 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:24:47,735 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:24:47,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1650567666, now seen corresponding path program 1 times [2018-07-23 18:24:47,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:24:47,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:24:47,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:24:47,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:24:47,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:24:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:24:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:24:48,018 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:24:48,018 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:24:48,018 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 112 with the following transitions: [2018-07-23 18:24:48,019 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [29], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [73], [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], [270], [274], [278], [282], [286], [290], [297], [305], [313], [317], [319], [781], [782], [783], [784], [786], [787] [2018-07-23 18:24:48,024 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:24:48,024 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 18:26:00,264 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 18:26:00,265 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 18:26:00,267 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:26:00,267 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:26:00,267 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:26:00,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:26:00,278 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:26:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:26:00,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:26:00,481 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 18:26:00,682 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:26:00,683 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 18:26:00,688 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 18:26:00,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:26:00 BoogieIcfgContainer [2018-07-23 18:26:00,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:26:00,690 INFO L168 Benchmark]: Toolchain (without parser) took 257224.80 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -981.5 MB). Peak memory consumption was 605.5 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:00,691 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 18:26:00,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:00,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:00,693 INFO L168 Benchmark]: Boogie Preprocessor took 223.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:00,694 INFO L168 Benchmark]: RCFGBuilder took 3721.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 136.4 MB). Peak memory consumption was 136.4 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:00,695 INFO L168 Benchmark]: TraceAbstraction took 252374.21 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 825.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -315.2 MB). Peak memory consumption was 510.5 MB. Max. memory is 7.1 GB. [2018-07-23 18:26:00,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 115.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 223.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3721.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 136.4 MB). Peak memory consumption was 136.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252374.21 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 825.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -315.2 MB). Peak memory consumption was 510.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 401]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 401). Cancelled while BasicCegarLoop was analyzing trace of length 112 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 252.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 63.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 728 SDtfs, 1806 SDslu, 962 SDs, 0 SdLazy, 3406 SolverSat, 583 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 242 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=791occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 168.5s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9922684520962858 AbsIntWeakeningRatio, 0.3137254901960784 AbsIntAvgWeakeningVarsNumRemoved, 1325.5686274509803 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 95525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 31/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label37_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-26-00-722.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label37_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-26-00-722.csv Completed graceful shutdown