java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label13_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:15:01,087 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:15:01,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:15:01,102 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:15:01,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:15:01,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:15:01,105 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:15:01,107 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:15:01,108 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:15:01,109 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:15:01,110 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:15:01,110 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:15:01,112 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:15:01,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:15:01,118 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:15:01,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:15:01,129 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:15:01,131 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:15:01,133 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:15:01,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:15:01,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:15:01,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:15:01,139 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:15:01,154 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 17:15:01,181 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:15:01,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:15:01,183 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:15:01,183 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:15:01,183 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:15:01,184 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:15:01,184 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:15:01,184 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:15:01,184 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:15:01,184 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:15:01,184 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:15:01,185 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:15:01,186 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:15:01,186 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:15:01,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:15:01,186 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:15:01,186 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:15:01,187 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:15:01,187 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:15:01,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:15:01,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:15:01,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:15:01,188 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:15:01,189 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:15:01,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:01,190 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:15:01,190 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:15:01,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:15:01,190 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:15:01,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:15:01,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:15:01,191 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:15:01,192 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:15:01,192 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:15:01,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:15:01,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:15:01,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:15:01,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:15:01,266 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:15:01,267 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label13_false-unreach-call_false-termination.c [2018-10-24 17:15:01,344 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/845d8789b/3413b14f2a484ca78727f88190194790/FLAG5d8342f7e [2018-10-24 17:15:01,970 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:15:01,971 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label13_false-unreach-call_false-termination.c [2018-10-24 17:15:01,984 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/845d8789b/3413b14f2a484ca78727f88190194790/FLAG5d8342f7e [2018-10-24 17:15:02,000 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/845d8789b/3413b14f2a484ca78727f88190194790 [2018-10-24 17:15:02,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:15:02,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:15:02,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:15:02,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:15:02,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25131977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02, skipping insertion in model container [2018-10-24 17:15:02,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:15:02,101 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:15:02,569 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,574 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:15:02,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,715 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:15:02,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02 WrapperNode [2018-10-24 17:15:02,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:15:02,723 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:15:02,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:15:02,912 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:15:02,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:03,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:15:03,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:15:03,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:15:03,004 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:15:03,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 17:15:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:15:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:15:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:15:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:15:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:15:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:15:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:15:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:15:06,532 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:15:06,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06 BoogieIcfgContainer [2018-10-24 17:15:06,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:15:06,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:15:06,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:15:06,537 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:15:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:15:02" (1/3) ... [2018-10-24 17:15:06,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fef406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (2/3) ... [2018-10-24 17:15:06,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fef406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06" (3/3) ... [2018-10-24 17:15:06,542 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label13_false-unreach-call_false-termination.c [2018-10-24 17:15:06,552 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:15:06,562 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:15:06,580 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:15:06,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:15:06,621 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:15:06,622 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:15:06,622 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:15:06,622 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:15:06,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:15:06,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:15:06,623 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:15:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 17:15:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 17:15:06,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:06,664 INFO L375 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] [2018-10-24 17:15:06,666 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:06,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:06,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2058412169, now seen corresponding path program 1 times [2018-10-24 17:15:06,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:06,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:06,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:07,347 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:15:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:07,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:07,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:07,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:07,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:07,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:07,515 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 17:15:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:09,183 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 17:15:09,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:09,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2018-10-24 17:15:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:09,203 INFO L225 Difference]: With dead ends: 618 [2018-10-24 17:15:09,203 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 17:15:09,212 INFO L605 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 [2018-10-24 17:15:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 17:15:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 17:15:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 17:15:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 17:15:09,293 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 93 [2018-10-24 17:15:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:09,294 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 17:15:09,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 17:15:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 17:15:09,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:09,302 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:09,303 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:09,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash -805713086, now seen corresponding path program 1 times [2018-10-24 17:15:09,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:09,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:09,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:09,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:09,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:09,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:09,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:09,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:09,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:09,697 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 17:15:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:10,914 INFO L93 Difference]: Finished difference Result 750 states and 1238 transitions. [2018-10-24 17:15:10,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 17:15:10,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-24 17:15:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:10,920 INFO L225 Difference]: With dead ends: 750 [2018-10-24 17:15:10,921 INFO L226 Difference]: Without dead ends: 377 [2018-10-24 17:15:10,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:15:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-10-24 17:15:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 372. [2018-10-24 17:15:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-10-24 17:15:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 580 transitions. [2018-10-24 17:15:10,965 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 580 transitions. Word has length 109 [2018-10-24 17:15:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:10,965 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 580 transitions. [2018-10-24 17:15:10,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 580 transitions. [2018-10-24 17:15:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 17:15:10,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:10,969 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:10,970 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:10,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:10,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1210732653, now seen corresponding path program 1 times [2018-10-24 17:15:10,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:10,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:10,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:10,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:10,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:11,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:11,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:11,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:11,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:11,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:11,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:11,158 INFO L87 Difference]: Start difference. First operand 372 states and 580 transitions. Second operand 6 states. [2018-10-24 17:15:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:13,040 INFO L93 Difference]: Finished difference Result 952 states and 1493 transitions. [2018-10-24 17:15:13,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:13,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 17:15:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:13,051 INFO L225 Difference]: With dead ends: 952 [2018-10-24 17:15:13,051 INFO L226 Difference]: Without dead ends: 586 [2018-10-24 17:15:13,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:15:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2018-10-24 17:15:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 563. [2018-10-24 17:15:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2018-10-24 17:15:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 823 transitions. [2018-10-24 17:15:13,085 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 823 transitions. Word has length 116 [2018-10-24 17:15:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:13,086 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 823 transitions. [2018-10-24 17:15:13,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:13,086 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 823 transitions. [2018-10-24 17:15:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 17:15:13,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:13,090 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:13,090 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:13,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2036823691, now seen corresponding path program 1 times [2018-10-24 17:15:13,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:13,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:13,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:13,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:13,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:13,605 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:15:13,846 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 17:15:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:13,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:13,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:15:13,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:13,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:15:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:15:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:15:13,960 INFO L87 Difference]: Start difference. First operand 563 states and 823 transitions. Second operand 5 states. [2018-10-24 17:15:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:16,215 INFO L93 Difference]: Finished difference Result 1269 states and 1897 transitions. [2018-10-24 17:15:16,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:15:16,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-24 17:15:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:16,221 INFO L225 Difference]: With dead ends: 1269 [2018-10-24 17:15:16,221 INFO L226 Difference]: Without dead ends: 562 [2018-10-24 17:15:16,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:15:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2018-10-24 17:15:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2018-10-24 17:15:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2018-10-24 17:15:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 811 transitions. [2018-10-24 17:15:16,243 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 811 transitions. Word has length 120 [2018-10-24 17:15:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:16,244 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 811 transitions. [2018-10-24 17:15:16,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:15:16,244 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 811 transitions. [2018-10-24 17:15:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 17:15:16,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:16,247 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:16,247 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:16,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:16,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1384283523, now seen corresponding path program 1 times [2018-10-24 17:15:16,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:16,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:16,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:16,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:16,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:16,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:16,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:16,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:16,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:16,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:16,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:16,407 INFO L87 Difference]: Start difference. First operand 562 states and 811 transitions. Second operand 6 states. [2018-10-24 17:15:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:17,885 INFO L93 Difference]: Finished difference Result 1532 states and 2276 transitions. [2018-10-24 17:15:17,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:17,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 17:15:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:17,895 INFO L225 Difference]: With dead ends: 1532 [2018-10-24 17:15:17,895 INFO L226 Difference]: Without dead ends: 976 [2018-10-24 17:15:17,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:15:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2018-10-24 17:15:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 950. [2018-10-24 17:15:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2018-10-24 17:15:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1335 transitions. [2018-10-24 17:15:17,940 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1335 transitions. Word has length 124 [2018-10-24 17:15:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:17,940 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1335 transitions. [2018-10-24 17:15:17,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1335 transitions. [2018-10-24 17:15:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 17:15:17,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:17,946 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:17,946 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:17,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1062019062, now seen corresponding path program 1 times [2018-10-24 17:15:17,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:17,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:17,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:18,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:18,419 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:18,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 134 with the following transitions: [2018-10-24 17:15:18,423 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [107], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [415], [417], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 17:15:18,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:18,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:30,163 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:30,165 INFO L272 AbstractInterpreter]: Visited 94 different actions 94 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 17:15:30,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:30,177 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:15:34,208 INFO L232 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 80.86% of their original sizes. [2018-10-24 17:15:34,208 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:15:37,977 INFO L413 sIntCurrentIteration]: We have 132 unified AI predicates [2018-10-24 17:15:37,978 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:15:37,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:15:37,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 17:15:37,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:37,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 17:15:37,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 17:15:37,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 17:15:37,980 INFO L87 Difference]: Start difference. First operand 950 states and 1335 transitions. Second operand 14 states. [2018-10-24 17:17:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:17:01,925 INFO L93 Difference]: Finished difference Result 2044 states and 2881 transitions. [2018-10-24 17:17:01,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 17:17:01,926 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 133 [2018-10-24 17:17:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:17:01,931 INFO L225 Difference]: With dead ends: 2044 [2018-10-24 17:17:01,931 INFO L226 Difference]: Without dead ends: 1100 [2018-10-24 17:17:01,935 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2018-10-24 17:17:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2018-10-24 17:17:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1095. [2018-10-24 17:17:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2018-10-24 17:17:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1488 transitions. [2018-10-24 17:17:02,050 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1488 transitions. Word has length 133 [2018-10-24 17:17:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:17:02,050 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1488 transitions. [2018-10-24 17:17:02,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 17:17:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1488 transitions. [2018-10-24 17:17:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 17:17:02,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:17:02,054 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:17:02,055 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:17:02,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:17:02,055 INFO L82 PathProgramCache]: Analyzing trace with hash 954054345, now seen corresponding path program 1 times [2018-10-24 17:17:02,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:17:02,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:17:02,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:17:02,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:17:02,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:17:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:17:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 47 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 17:17:02,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:17:02,349 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:17:02,349 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-10-24 17:17:02,349 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [107], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [415], [417], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 17:17:02,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:17:02,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:17:41,814 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:17:41,815 INFO L272 AbstractInterpreter]: Visited 98 different actions 380 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 17:17:41,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:17:41,824 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:17:44,832 INFO L232 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 81.88% of their original sizes. [2018-10-24 17:17:44,832 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 17:19:21,199 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:19:21,202 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:19:21,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:19:21 BoogieIcfgContainer [2018-10-24 17:19:21,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:19:21,204 INFO L168 Benchmark]: Toolchain (without parser) took 259191.88 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -707.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:21,205 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:21,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.87 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:21,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.30 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:21,208 INFO L168 Benchmark]: Boogie Preprocessor took 91.35 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:21,208 INFO L168 Benchmark]: RCFGBuilder took 3529.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:21,209 INFO L168 Benchmark]: TraceAbstraction took 254669.13 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -49.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:21,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.87 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.30 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.35 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3529.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254669.13 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -49.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 430]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 430). Cancelled while BasicCegarLoop was analyzing trace of length 144 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 254.5s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 92.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 713 SDtfs, 3654 SDslu, 596 SDs, 0 SdLazy, 3592 SolverSat, 678 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 181 GetRequests, 133 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 51.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9930459656737028 AbsIntWeakeningRatio, 0.26277372262773724 AbsIntAvgWeakeningVarsNumRemoved, 1171.2919708029196 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 59 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 695 NumberOfCodeBlocks, 695 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 352829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 126/128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown