java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:28:35,297 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:28:35,299 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:28:35,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:28:35,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:28:35,314 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:28:35,315 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:28:35,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:28:35,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:28:35,320 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:28:35,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:28:35,321 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:28:35,322 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:28:35,324 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:28:35,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:28:35,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:28:35,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:28:35,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:28:35,335 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:28:35,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:28:35,340 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:28:35,342 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:28:35,344 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:28:35,344 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:28:35,345 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:28:35,346 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:28:35,347 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:28:35,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:28:35,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:28:35,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:28:35,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:28:35,351 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:28:35,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:28:35,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:28:35,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:28:35,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:28:35,353 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:28:35,381 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:28:35,381 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:28:35,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:28:35,383 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:28:35,383 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:28:35,383 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:28:35,384 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:28:35,384 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:28:35,384 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:28:35,384 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:28:35,384 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:28:35,385 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:28:35,386 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:28:35,386 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:28:35,386 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:28:35,387 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:28:35,388 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:28:35,389 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:28:35,389 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:28:35,389 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:28:35,389 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:28:35,390 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:28:35,390 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:28:35,390 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:28:35,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:28:35,390 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:28:35,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:28:35,391 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:28:35,391 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:28:35,391 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:28:35,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:28:35,392 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:28:35,392 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:28:35,392 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:28:35,470 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:28:35,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:28:35,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:28:35,496 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:28:35,496 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:28:35,497 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-11-07 15:28:35,569 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7322effc3/8e7544afff2b4ed5aab7b732d5473060/FLAGb28c32dc1 [2018-11-07 15:28:36,292 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:28:36,293 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-11-07 15:28:36,317 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7322effc3/8e7544afff2b4ed5aab7b732d5473060/FLAGb28c32dc1 [2018-11-07 15:28:36,335 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7322effc3/8e7544afff2b4ed5aab7b732d5473060 [2018-11-07 15:28:36,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:28:36,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:28:36,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:28:36,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:28:36,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:28:36,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:28:36" (1/1) ... [2018-11-07 15:28:36,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedeeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:36, skipping insertion in model container [2018-11-07 15:28:36,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:28:36" (1/1) ... [2018-11-07 15:28:36,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:28:36,505 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:28:37,731 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:28:37,736 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:28:38,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:28:38,132 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:28:38,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38 WrapperNode [2018-11-07 15:28:38,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:28:38,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:28:38,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:28:38,135 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:28:38,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:28:38,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:28:38,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:28:38,407 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:28:38,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... [2018-11-07 15:28:38,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:28:38,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:28:38,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:28:38,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:28:38,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:28:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:28:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:28:38,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:28:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:28:38,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:28:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:28:38,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:28:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:28:38,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:28:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:28:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:28:48,355 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:28:48,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:28:48 BoogieIcfgContainer [2018-11-07 15:28:48,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:28:48,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:28:48,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:28:48,361 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:28:48,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:28:36" (1/3) ... [2018-11-07 15:28:48,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54529a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:28:48, skipping insertion in model container [2018-11-07 15:28:48,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:38" (2/3) ... [2018-11-07 15:28:48,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54529a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:28:48, skipping insertion in model container [2018-11-07 15:28:48,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:28:48" (3/3) ... [2018-11-07 15:28:48,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label05_true-unreach-call.c [2018-11-07 15:28:48,376 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:28:48,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:28:48,405 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:28:48,453 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:28:48,454 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:28:48,454 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:28:48,454 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:28:48,454 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:28:48,454 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:28:48,455 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:28:48,455 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:28:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 15:28:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 15:28:48,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:28:48,507 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] [2018-11-07 15:28:48,510 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:28:48,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:28:48,517 INFO L82 PathProgramCache]: Analyzing trace with hash -2043862628, now seen corresponding path program 1 times [2018-11-07 15:28:48,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:28:48,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:28:48,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:28:48,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:28:48,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:28:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:28:49,162 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 15:28:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:28:49,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:28:49,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:28:49,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:28:49,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:28:49,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:28:49,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:28:49,237 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 15:28:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:28:57,884 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-11-07 15:28:57,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:28:57,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-11-07 15:28:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:28:57,938 INFO L225 Difference]: With dead ends: 2166 [2018-11-07 15:28:57,939 INFO L226 Difference]: Without dead ends: 1556 [2018-11-07 15:28:57,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:28:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-11-07 15:28:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-11-07 15:28:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-11-07 15:28:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-11-07 15:28:58,154 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 68 [2018-11-07 15:28:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:28:58,155 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-11-07 15:28:58,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:28:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-11-07 15:28:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 15:28:58,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:28:58,171 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, 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, 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] [2018-11-07 15:28:58,171 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:28:58,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:28:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2068589566, now seen corresponding path program 1 times [2018-11-07 15:28:58,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:28:58,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:28:58,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:28:58,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:28:58,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:28:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:28:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:28:58,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:28:58,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:28:58,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:28:58,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:28:58,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:28:58,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:28:58,545 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-11-07 15:29:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:05,672 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-11-07 15:29:05,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:29:05,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 15:29:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:05,693 INFO L225 Difference]: With dead ends: 3059 [2018-11-07 15:29:05,693 INFO L226 Difference]: Without dead ends: 1997 [2018-11-07 15:29:05,698 INFO L604 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 [2018-11-07 15:29:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-11-07 15:29:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-11-07 15:29:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-11-07 15:29:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-11-07 15:29:05,780 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 144 [2018-11-07 15:29:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:05,780 INFO L480 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-11-07 15:29:05,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:29:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-11-07 15:29:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 15:29:05,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:05,789 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, 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, 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] [2018-11-07 15:29:05,790 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:05,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:05,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1218422790, now seen corresponding path program 1 times [2018-11-07 15:29:05,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:05,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:05,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:05,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:05,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:06,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:29:06,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:29:06,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:06,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:29:06,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:29:06,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:29:06,082 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-11-07 15:29:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:10,092 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-11-07 15:29:10,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:29:10,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-07 15:29:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:10,113 INFO L225 Difference]: With dead ends: 4880 [2018-11-07 15:29:10,113 INFO L226 Difference]: Without dead ends: 2911 [2018-11-07 15:29:10,123 INFO L604 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 [2018-11-07 15:29:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-11-07 15:29:10,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-11-07 15:29:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-11-07 15:29:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-11-07 15:29:10,206 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 148 [2018-11-07 15:29:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:10,207 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-11-07 15:29:10,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:29:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-11-07 15:29:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 15:29:10,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:10,210 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, 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, 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] [2018-11-07 15:29:10,211 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:10,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash -28677417, now seen corresponding path program 1 times [2018-11-07 15:29:10,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:10,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:10,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:10,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:10,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:10,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:29:10,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:29:10,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:10,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:29:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:29:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:29:10,430 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-11-07 15:29:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:14,765 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-11-07 15:29:14,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:29:14,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-11-07 15:29:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:14,780 INFO L225 Difference]: With dead ends: 5754 [2018-11-07 15:29:14,780 INFO L226 Difference]: Without dead ends: 2880 [2018-11-07 15:29:14,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:29:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-11-07 15:29:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-11-07 15:29:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-11-07 15:29:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-11-07 15:29:14,859 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 178 [2018-11-07 15:29:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:14,860 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-11-07 15:29:14,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:29:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-11-07 15:29:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 15:29:14,863 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:14,864 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:14,864 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:14,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:14,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1314675152, now seen corresponding path program 1 times [2018-11-07 15:29:14,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:14,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:14,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:14,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:14,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 15:29:15,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:29:15,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:29:15,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:15,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:29:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:29:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:29:15,244 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 4 states. [2018-11-07 15:29:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:22,087 INFO L93 Difference]: Finished difference Result 11062 states and 14732 transitions. [2018-11-07 15:29:22,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:29:22,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-07 15:29:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:22,119 INFO L225 Difference]: With dead ends: 11062 [2018-11-07 15:29:22,120 INFO L226 Difference]: Without dead ends: 8188 [2018-11-07 15:29:22,132 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:29:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8188 states. [2018-11-07 15:29:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8188 to 8188. [2018-11-07 15:29:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8188 states. [2018-11-07 15:29:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 10116 transitions. [2018-11-07 15:29:22,334 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 10116 transitions. Word has length 232 [2018-11-07 15:29:22,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:22,334 INFO L480 AbstractCegarLoop]: Abstraction has 8188 states and 10116 transitions. [2018-11-07 15:29:22,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:29:22,335 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 10116 transitions. [2018-11-07 15:29:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-11-07 15:29:22,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:22,343 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:22,343 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:22,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash 495416691, now seen corresponding path program 1 times [2018-11-07 15:29:22,344 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:22,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:22,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:22,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:22,345 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 122 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:29:22,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:22,923 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:29:22,924 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-11-07 15:29:22,927 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1154], [1156], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:29:22,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:29:22,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:29:23,539 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:29:24,188 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:29:24,194 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:29:24,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:24,243 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:29:25,422 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 75.77% of their original sizes. [2018-11-07 15:29:25,422 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:29:25,872 INFO L415 sIntCurrentIteration]: We unified 254 AI predicates to 254 [2018-11-07 15:29:25,872 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:29:25,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:29:25,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 15:29:25,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:25,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:29:25,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:29:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:29:25,875 INFO L87 Difference]: Start difference. First operand 8188 states and 10116 transitions. Second operand 8 states. Received shutdown request... [2018-11-07 15:32:45,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:32:45,829 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:32:45,836 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:32:45,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:32:45 BoogieIcfgContainer [2018-11-07 15:32:45,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:32:45,838 INFO L168 Benchmark]: Toolchain (without parser) took 249490.23 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 15:32:45,839 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 15:32:45,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1783.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:45,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 272.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -965.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:45,842 INFO L168 Benchmark]: Boogie Preprocessor took 200.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:45,842 INFO L168 Benchmark]: RCFGBuilder took 9748.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 455.5 MB). Peak memory consumption was 455.5 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:45,843 INFO L168 Benchmark]: TraceAbstraction took 237479.59 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -845.8 MB). Peak memory consumption was 931.0 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:45,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1783.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 272.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -965.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9748.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 455.5 MB). Peak memory consumption was 455.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237479.59 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -845.8 MB). Peak memory consumption was 931.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was constructing difference of abstraction (8188states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (1992 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 237.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 231.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2152 SDtfs, 7440 SDslu, 1392 SDs, 0 SdLazy, 13007 SolverSat, 3157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 216.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 292 GetRequests, 262 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8188occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9979737895905307 AbsIntWeakeningRatio, 0.1062992125984252 AbsIntAvgWeakeningVarsNumRemoved, 19.724409448818896 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 541 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1025 NumberOfCodeBlocks, 1025 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1019 ConstructedInterpolants, 0 QuantifiedInterpolants, 859380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 508/580 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown