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_label52_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:33:59,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:33:59,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:33:59,596 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:33:59,596 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:33:59,597 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:33:59,598 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:33:59,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:33:59,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:33:59,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:33:59,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:33:59,605 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:33:59,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:33:59,606 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:33:59,607 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:33:59,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:33:59,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:33:59,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:33:59,615 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:33:59,618 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:33:59,619 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:33:59,622 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:33:59,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:33:59,638 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 19:33:59,663 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:33:59,663 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:33:59,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:33:59,664 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:33:59,664 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:33:59,665 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:33:59,665 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:33:59,665 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:33:59,665 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:33:59,665 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:33:59,666 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:33:59,666 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:33:59,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:33:59,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:33:59,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:33:59,667 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:33:59,668 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:33:59,668 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:33:59,668 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:33:59,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:33:59,668 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:33:59,669 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:33:59,669 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:33:59,669 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:33:59,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:33:59,670 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:33:59,670 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:33:59,670 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:33:59,670 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:33:59,671 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:33:59,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:33:59,671 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:33:59,671 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:33:59,671 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:33:59,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:33:59,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:33:59,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:33:59,731 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:33:59,731 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:33:59,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52_true-unreach-call_false-termination.c [2018-10-24 19:33:59,783 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f28cdb713/284a49350c7a4f2eb1df816afaa22464/FLAG340fdcb1e [2018-10-24 19:34:00,357 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:34:00,358 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label52_true-unreach-call_false-termination.c [2018-10-24 19:34:00,373 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f28cdb713/284a49350c7a4f2eb1df816afaa22464/FLAG340fdcb1e [2018-10-24 19:34:00,399 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f28cdb713/284a49350c7a4f2eb1df816afaa22464 [2018-10-24 19:34:00,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:34:00,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:34:00,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:34:00,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:34:00,415 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:34:00,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:34:00" (1/1) ... [2018-10-24 19:34:00,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b394b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:00, skipping insertion in model container [2018-10-24 19:34:00,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:34:00" (1/1) ... [2018-10-24 19:34:00,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:34:00,512 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:34:00,983 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:34:00,993 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:34:01,128 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:34:01,153 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:34:01,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01 WrapperNode [2018-10-24 19:34:01,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:34:01,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:34:01,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:34:01,160 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:34:01,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:34:01,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:34:01,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:34:01,346 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:34:01,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (1/1) ... [2018-10-24 19:34:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:34:01,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:34:01,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:34:01,458 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:34:01,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (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 19:34:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:34:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:34:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:34:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:34:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:34:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:34:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:34:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:34:05,095 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:34:05,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:34:05 BoogieIcfgContainer [2018-10-24 19:34:05,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:34:05,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:34:05,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:34:05,106 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:34:05,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:34:00" (1/3) ... [2018-10-24 19:34:05,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae2223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:34:05, skipping insertion in model container [2018-10-24 19:34:05,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:34:01" (2/3) ... [2018-10-24 19:34:05,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae2223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:34:05, skipping insertion in model container [2018-10-24 19:34:05,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:34:05" (3/3) ... [2018-10-24 19:34:05,110 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label52_true-unreach-call_false-termination.c [2018-10-24 19:34:05,120 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:34:05,129 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:34:05,146 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:34:05,194 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:34:05,194 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:34:05,194 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:34:05,194 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:34:05,195 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:34:05,196 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:34:05,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:34:05,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:34:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:34:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 19:34:05,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:05,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:05,241 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:05,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:05,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1672281121, now seen corresponding path program 1 times [2018-10-24 19:34:05,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:05,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:05,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:05,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:05,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:05,843 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-24 19:34:06,035 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 19:34:06,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:06,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:34:06,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:06,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:34:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:34:06,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:34:06,066 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-10-24 19:34:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:08,647 INFO L93 Difference]: Finished difference Result 774 states and 1357 transitions. [2018-10-24 19:34:08,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:34:08,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-10-24 19:34:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:08,673 INFO L225 Difference]: With dead ends: 774 [2018-10-24 19:34:08,674 INFO L226 Difference]: Without dead ends: 531 [2018-10-24 19:34:08,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:34:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-24 19:34:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 529. [2018-10-24 19:34:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-10-24 19:34:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 921 transitions. [2018-10-24 19:34:08,778 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 921 transitions. Word has length 111 [2018-10-24 19:34:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:08,779 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 921 transitions. [2018-10-24 19:34:08,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:34:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 921 transitions. [2018-10-24 19:34:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 19:34:08,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:08,789 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:08,790 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:08,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:08,790 INFO L82 PathProgramCache]: Analyzing trace with hash -512583288, now seen corresponding path program 1 times [2018-10-24 19:34:08,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:08,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:08,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:08,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:08,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:09,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:09,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:34:09,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:09,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:34:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:34:09,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:34:09,095 INFO L87 Difference]: Start difference. First operand 529 states and 921 transitions. Second operand 6 states. [2018-10-24 19:34:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:11,204 INFO L93 Difference]: Finished difference Result 1701 states and 3117 transitions. [2018-10-24 19:34:11,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:34:11,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-24 19:34:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:11,228 INFO L225 Difference]: With dead ends: 1701 [2018-10-24 19:34:11,228 INFO L226 Difference]: Without dead ends: 1178 [2018-10-24 19:34:11,237 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 19:34:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2018-10-24 19:34:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1154. [2018-10-24 19:34:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2018-10-24 19:34:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1912 transitions. [2018-10-24 19:34:11,333 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1912 transitions. Word has length 132 [2018-10-24 19:34:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:11,334 INFO L481 AbstractCegarLoop]: Abstraction has 1154 states and 1912 transitions. [2018-10-24 19:34:11,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:34:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1912 transitions. [2018-10-24 19:34:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 19:34:11,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:11,349 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:11,349 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:11,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:11,349 INFO L82 PathProgramCache]: Analyzing trace with hash 270471924, now seen corresponding path program 1 times [2018-10-24 19:34:11,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:11,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:11,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:11,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:11,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:11,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:34:11,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:34:11,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:11,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:34:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:34:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:34:11,600 INFO L87 Difference]: Start difference. First operand 1154 states and 1912 transitions. Second operand 3 states. [2018-10-24 19:34:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:13,717 INFO L93 Difference]: Finished difference Result 3292 states and 5647 transitions. [2018-10-24 19:34:13,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:34:13,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-24 19:34:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:13,734 INFO L225 Difference]: With dead ends: 3292 [2018-10-24 19:34:13,734 INFO L226 Difference]: Without dead ends: 2144 [2018-10-24 19:34:13,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:34:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2018-10-24 19:34:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2140. [2018-10-24 19:34:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2018-10-24 19:34:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3397 transitions. [2018-10-24 19:34:13,818 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3397 transitions. Word has length 133 [2018-10-24 19:34:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:13,819 INFO L481 AbstractCegarLoop]: Abstraction has 2140 states and 3397 transitions. [2018-10-24 19:34:13,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:34:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3397 transitions. [2018-10-24 19:34:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 19:34:13,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:13,828 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:34:13,829 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:13,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:13,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2050743857, now seen corresponding path program 1 times [2018-10-24 19:34:13,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:13,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:13,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:13,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:13,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:14,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:34:14,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:34:14,065 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-24 19:34:14,067 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [91], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [182], [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], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:34:14,155 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:34:14,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:34:26,162 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:34:26,164 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:34:26,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:26,178 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:34:31,901 INFO L232 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 81.1% of their original sizes. [2018-10-24 19:34:31,902 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:34:35,549 INFO L413 sIntCurrentIteration]: We have 185 unified AI predicates [2018-10-24 19:34:35,550 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:34:35,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:34:35,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-24 19:34:35,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:34:35,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 19:34:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 19:34:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-10-24 19:34:35,553 INFO L87 Difference]: Start difference. First operand 2140 states and 3397 transitions. Second operand 15 states. [2018-10-24 19:36:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:36:08,343 INFO L93 Difference]: Finished difference Result 4574 states and 7228 transitions. [2018-10-24 19:36:08,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:36:08,343 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 186 [2018-10-24 19:36:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:36:08,358 INFO L225 Difference]: With dead ends: 4574 [2018-10-24 19:36:08,358 INFO L226 Difference]: Without dead ends: 2440 [2018-10-24 19:36:08,367 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-10-24 19:36:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-24 19:36:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2287. [2018-10-24 19:36:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2018-10-24 19:36:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3555 transitions. [2018-10-24 19:36:08,521 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3555 transitions. Word has length 186 [2018-10-24 19:36:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:36:08,521 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3555 transitions. [2018-10-24 19:36:08,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 19:36:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3555 transitions. [2018-10-24 19:36:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 19:36:08,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:36:08,537 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:36:08,537 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:36:08,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:36:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1245086832, now seen corresponding path program 1 times [2018-10-24 19:36:08,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:36:08,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:36:08,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:36:08,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:36:08,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:36:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:36:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 89 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 19:36:08,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:36:08,779 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:36:08,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 19:36:08,780 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [91], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [182], [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], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:36:08,786 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:36:08,787 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:36:30,569 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:36:30,569 INFO L272 AbstractInterpreter]: Visited 116 different actions 226 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-24 19:36:30,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:36:30,579 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:36:35,977 INFO L232 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 81.19% of their original sizes. [2018-10-24 19:36:35,977 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:37:13,311 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-24 19:37:13,312 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:37:13,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:37:13,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 19:37:13,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:37:13,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 19:37:13,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 19:37:13,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:37:13,314 INFO L87 Difference]: Start difference. First operand 2287 states and 3555 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 19:38:16,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 19:38:16,224 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:38:16,229 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:38:16,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:38:16 BoogieIcfgContainer [2018-10-24 19:38:16,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:38:16,231 INFO L168 Benchmark]: Toolchain (without parser) took 255821.15 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 790.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:16,232 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-24 19:38:16,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.04 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:16,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -848.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:16,234 INFO L168 Benchmark]: Boogie Preprocessor took 108.67 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:38:16,235 INFO L168 Benchmark]: RCFGBuilder took 3643.20 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: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:16,235 INFO L168 Benchmark]: TraceAbstraction took 251127.85 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -346.8 MB). Peak memory consumption was 734.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:38:16,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 748.04 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -848.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.67 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3643.20 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: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251127.85 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -346.8 MB). Peak memory consumption was 734.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 484]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 484). Cancelled while BasicCegarLoop was constructing difference of abstraction (2287states) and FLOYD_HOARE automaton (currently 22 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (148 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 251.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 162.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 711 SDtfs, 2757 SDslu, 741 SDs, 0 SdLazy, 3146 SolverSat, 712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 422 GetRequests, 343 SyntacticMatches, 18 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 52.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2287occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9948435277382641 AbsIntWeakeningRatio, 0.19473684210526315 AbsIntAvgWeakeningVarsNumRemoved, 523.8052631578947 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 183 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 758 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 753 ConstructedInterpolants, 0 QuantifiedInterpolants, 343990 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 224/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown