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/Problem15_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:36:55,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:36:55,350 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:36:55,363 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:36:55,364 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:36:55,367 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:36:55,368 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:36:55,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:36:55,377 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:36:55,378 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:36:55,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:36:55,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:36:55,381 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:36:55,382 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:36:55,384 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:36:55,384 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:36:55,394 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:36:55,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:36:55,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:36:55,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:36:55,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:36:55,405 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:36:55,412 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:36:55,412 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:36:55,412 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:36:55,413 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:36:55,415 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:36:55,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:36:55,419 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:36:55,421 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:36:55,423 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:36:55,423 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:36:55,423 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:36:55,425 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:36:55,426 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:36:55,427 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:36:55,427 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 18:36:55,456 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:36:55,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:36:55,457 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:36:55,457 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:36:55,457 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:36:55,458 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:36:55,458 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:36:55,458 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:36:55,458 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:36:55,458 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:36:55,459 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:36:55,459 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:36:55,460 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:36:55,460 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:36:55,460 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:36:55,460 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:36:55,460 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:36:55,461 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:36:55,461 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:36:55,461 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:36:55,461 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:36:55,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:36:55,462 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:36:55,462 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:36:55,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:36:55,462 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:36:55,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:36:55,463 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:36:55,463 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:36:55,463 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:36:55,463 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:36:55,463 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:36:55,464 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:36:55,464 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:36:55,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:36:55,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:36:55,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:36:55,529 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:36:55,530 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:36:55,531 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15_false-unreach-call.c [2018-10-24 18:36:55,600 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0ca61ff75/1b6ea614dad04b7e894263b324b05a41/FLAG14644d405 [2018-10-24 18:36:56,371 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:36:56,372 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label15_false-unreach-call.c [2018-10-24 18:36:56,398 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0ca61ff75/1b6ea614dad04b7e894263b324b05a41/FLAG14644d405 [2018-10-24 18:36:56,418 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0ca61ff75/1b6ea614dad04b7e894263b324b05a41 [2018-10-24 18:36:56,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:36:56,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:36:56,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:36:56,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:36:56,439 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:36:56,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:36:56" (1/1) ... [2018-10-24 18:36:56,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675171b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:56, skipping insertion in model container [2018-10-24 18:36:56,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:36:56" (1/1) ... [2018-10-24 18:36:56,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:36:56,552 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:36:57,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:36:57,406 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:36:57,724 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:36:57,747 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:36:57,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57 WrapperNode [2018-10-24 18:36:57,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:36:57,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:36:57,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:36:57,750 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:36:57,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:57,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:36:58,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:36:58,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:36:58,154 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:36:58,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (1/1) ... [2018-10-24 18:36:58,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:36:58,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:36:58,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:36:58,372 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:36:58,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (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 18:36:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:36:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:36:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:36:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:36:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:36:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:36:58,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:36:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:36:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:36:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:37:06,374 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:37:06,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:37:06 BoogieIcfgContainer [2018-10-24 18:37:06,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:37:06,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:37:06,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:37:06,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:37:06,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:36:56" (1/3) ... [2018-10-24 18:37:06,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a999784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:37:06, skipping insertion in model container [2018-10-24 18:37:06,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:36:57" (2/3) ... [2018-10-24 18:37:06,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a999784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:37:06, skipping insertion in model container [2018-10-24 18:37:06,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:37:06" (3/3) ... [2018-10-24 18:37:06,386 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label15_false-unreach-call.c [2018-10-24 18:37:06,394 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:37:06,405 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:37:06,423 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:37:06,479 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:37:06,479 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:37:06,479 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:37:06,480 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:37:06,480 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:37:06,480 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:37:06,480 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:37:06,480 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:37:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 18:37:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 18:37:06,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:06,519 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] [2018-10-24 18:37:06,521 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:06,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash 51757492, now seen corresponding path program 1 times [2018-10-24 18:37:06,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:06,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:06,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:06,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:06,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:07,015 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:37:07,120 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 18:37:07,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:37:07,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:37:07,123 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:07,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:37:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:37:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:37:07,147 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 18:37:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:11,836 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-10-24 18:37:11,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:37:11,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-24 18:37:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:11,868 INFO L225 Difference]: With dead ends: 1193 [2018-10-24 18:37:11,868 INFO L226 Difference]: Without dead ends: 753 [2018-10-24 18:37:11,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:37:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-10-24 18:37:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-10-24 18:37:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-10-24 18:37:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-10-24 18:37:11,988 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 26 [2018-10-24 18:37:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:11,989 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-10-24 18:37:11,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:37:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-10-24 18:37:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 18:37:11,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:11,999 INFO L375 BasicCegarLoop]: trace histogram [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 18:37:11,999 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:11,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:12,000 INFO L82 PathProgramCache]: Analyzing trace with hash -30490780, now seen corresponding path program 1 times [2018-10-24 18:37:12,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:12,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:12,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:12,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:12,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:37:12,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:37:12,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:37:12,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:12,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:37:12,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:37:12,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:37:12,291 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-10-24 18:37:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:29,954 INFO L93 Difference]: Finished difference Result 2821 states and 5078 transitions. [2018-10-24 18:37:29,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:37:29,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-10-24 18:37:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:29,972 INFO L225 Difference]: With dead ends: 2821 [2018-10-24 18:37:29,972 INFO L226 Difference]: Without dead ends: 2074 [2018-10-24 18:37:29,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:37:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2018-10-24 18:37:30,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2049. [2018-10-24 18:37:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2018-10-24 18:37:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3213 transitions. [2018-10-24 18:37:30,082 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3213 transitions. Word has length 106 [2018-10-24 18:37:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:30,082 INFO L481 AbstractCegarLoop]: Abstraction has 2049 states and 3213 transitions. [2018-10-24 18:37:30,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:37:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3213 transitions. [2018-10-24 18:37:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 18:37:30,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:30,087 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:30,087 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:30,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1343536092, now seen corresponding path program 1 times [2018-10-24 18:37:30,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:30,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:30,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:30,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:30,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:37:30,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:37:30,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:37:30,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:30,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:37:30,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:37:30,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:37:30,363 INFO L87 Difference]: Start difference. First operand 2049 states and 3213 transitions. Second operand 6 states. [2018-10-24 18:37:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:46,126 INFO L93 Difference]: Finished difference Result 6266 states and 10277 transitions. [2018-10-24 18:37:46,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:37:46,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 18:37:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:46,160 INFO L225 Difference]: With dead ends: 6266 [2018-10-24 18:37:46,160 INFO L226 Difference]: Without dead ends: 4223 [2018-10-24 18:37:46,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:37:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2018-10-24 18:37:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 4165. [2018-10-24 18:37:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2018-10-24 18:37:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 6108 transitions. [2018-10-24 18:37:46,320 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 6108 transitions. Word has length 110 [2018-10-24 18:37:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:46,321 INFO L481 AbstractCegarLoop]: Abstraction has 4165 states and 6108 transitions. [2018-10-24 18:37:46,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:37:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 6108 transitions. [2018-10-24 18:37:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 18:37:46,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:46,328 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 18:37:46,328 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:46,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:46,329 INFO L82 PathProgramCache]: Analyzing trace with hash -909056089, now seen corresponding path program 1 times [2018-10-24 18:37:46,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:46,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:46,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:46,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:46,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:37:46,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:37:46,632 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:37:46,633 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-24 18:37:46,635 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:37:46,706 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:37:46,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:37:48,602 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:37:49,225 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:37:49,226 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:37:49,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:49,266 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:37:51,076 INFO L232 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-24 18:37:51,076 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:37:51,500 INFO L413 sIntCurrentIteration]: We have 179 unified AI predicates [2018-10-24 18:37:51,501 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:37:51,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:37:51,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:37:51,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:37:51,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:37:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:37:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:37:51,504 INFO L87 Difference]: Start difference. First operand 4165 states and 6108 transitions. Second operand 7 states. [2018-10-24 18:38:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:38:25,779 INFO L93 Difference]: Finished difference Result 8634 states and 12565 transitions. [2018-10-24 18:38:25,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:38:25,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2018-10-24 18:38:25,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:38:25,803 INFO L225 Difference]: With dead ends: 8634 [2018-10-24 18:38:25,803 INFO L226 Difference]: Without dead ends: 4475 [2018-10-24 18:38:25,815 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:38:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-10-24 18:38:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4473. [2018-10-24 18:38:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4473 states. [2018-10-24 18:38:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 6425 transitions. [2018-10-24 18:38:25,921 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 6425 transitions. Word has length 180 [2018-10-24 18:38:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:38:25,921 INFO L481 AbstractCegarLoop]: Abstraction has 4473 states and 6425 transitions. [2018-10-24 18:38:25,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:38:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 6425 transitions. [2018-10-24 18:38:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 18:38:25,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:38:25,925 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 18:38:25,926 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:38:25,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:38:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash 541442661, now seen corresponding path program 1 times [2018-10-24 18:38:25,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:38:25,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:38:25,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:38:25,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:38:25,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:38:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:38:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 39 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:38:26,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:38:26,253 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:38:26,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-24 18:38:26,253 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:38:26,259 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:38:26,260 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:38:27,147 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:38:33,693 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:38:33,693 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:38:33,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:38:33,701 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:38:36,264 INFO L232 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 79.24% of their original sizes. [2018-10-24 18:38:36,265 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:39:57,688 INFO L413 sIntCurrentIteration]: We have 205 unified AI predicates [2018-10-24 18:39:57,688 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:39:57,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:39:57,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 18:39:57,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:39:57,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 18:39:57,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 18:39:57,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-10-24 18:39:57,690 INFO L87 Difference]: Start difference. First operand 4473 states and 6425 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 18:41:01,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 18:41:01,187 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:41:01,192 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:41:01,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:41:01 BoogieIcfgContainer [2018-10-24 18:41:01,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:41:01,193 INFO L168 Benchmark]: Toolchain (without parser) took 244760.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 174.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:01,195 INFO L168 Benchmark]: CDTParser took 0.52 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 18:41:01,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1313.63 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:01,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 404.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:01,197 INFO L168 Benchmark]: Boogie Preprocessor took 217.78 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:01,198 INFO L168 Benchmark]: RCFGBuilder took 8003.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 316.1 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:41:01,199 INFO L168 Benchmark]: TraceAbstraction took 234816.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.9 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:41:01,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 1313.63 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 404.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.78 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8003.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 316.1 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234816.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.9 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 64). Cancelled while BasicCegarLoop was constructing difference of abstraction (4473states) and FLOYD_HOARE automaton (currently 16 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (198 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 234.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 136.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1005 SDtfs, 5933 SDslu, 640 SDs, 0 SdLazy, 7906 SolverSat, 1765 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 69.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 418 GetRequests, 309 SyntacticMatches, 65 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 84.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4473occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9943010265700482 AbsIntWeakeningRatio, 0.13541666666666666 AbsIntAvgWeakeningVarsNumRemoved, 498.3359375 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 85 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 628 NumberOfCodeBlocks, 628 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 623 ConstructedInterpolants, 0 QuantifiedInterpolants, 502222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 128/268 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown