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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:58:47,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:58:47,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:58:47,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:58:47,381 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:58:47,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:58:47,384 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:58:47,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:58:47,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:58:47,399 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:58:47,400 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:58:47,400 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:58:47,401 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:58:47,402 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:58:47,403 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:58:47,404 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:58:47,404 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:58:47,406 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:58:47,408 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:58:47,410 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:58:47,411 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:58:47,412 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:58:47,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:58:47,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:58:47,415 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:58:47,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:58:47,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:58:47,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:58:47,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:58:47,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:58:47,419 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:58:47,420 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:58:47,420 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:58:47,421 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:58:47,422 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:58:47,422 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:58:47,423 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-LIM.epf [2018-11-07 20:58:47,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:58:47,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:58:47,450 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:58:47,450 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:58:47,450 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:58:47,450 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:58:47,450 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:58:47,451 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:58:47,451 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:58:47,451 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:58:47,451 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:58:47,451 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:58:47,452 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:58:47,453 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:58:47,453 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:58:47,453 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:58:47,454 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:58:47,454 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:58:47,454 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:58:47,454 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:58:47,454 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:58:47,456 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:58:47,456 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:58:47,457 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:58:47,457 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:58:47,457 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:58:47,457 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:58:47,457 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:58:47,458 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:58:47,458 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:58:47,458 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:58:47,458 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:58:47,458 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:58:47,459 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:58:47,459 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:58:47,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:58:47,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:58:47,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:58:47,547 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:58:47,548 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:58:47,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02_true-unreach-call.c [2018-11-07 20:58:47,627 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb78827aa/f5d4c3359c2648559a3f3785a9c8efaf/FLAG0e3bca3d1 [2018-11-07 20:58:48,374 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:58:48,376 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label02_true-unreach-call.c [2018-11-07 20:58:48,406 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb78827aa/f5d4c3359c2648559a3f3785a9c8efaf/FLAG0e3bca3d1 [2018-11-07 20:58:48,426 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb78827aa/f5d4c3359c2648559a3f3785a9c8efaf [2018-11-07 20:58:48,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:58:48,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:58:48,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:58:48,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:58:48,449 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:58:48,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:58:48" (1/1) ... [2018-11-07 20:58:48,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c9c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:48, skipping insertion in model container [2018-11-07 20:58:48,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:58:48" (1/1) ... [2018-11-07 20:58:48,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:58:48,592 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:58:49,563 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:58:49,569 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:58:50,032 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:58:50,055 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:58:50,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50 WrapperNode [2018-11-07 20:58:50,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:58:50,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:58:50,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:58:50,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:58:50,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:58:50,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:58:50,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:58:50,336 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:58:50,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (1/1) ... [2018-11-07 20:58:50,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:58:50,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:58:50,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:58:50,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:58:50,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (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 20:58:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:58:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:58:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:58:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:58:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:58:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:58:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:58:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:58:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:58:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:58:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:59:00,987 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:59:00,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:00 BoogieIcfgContainer [2018-11-07 20:59:00,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:59:00,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:59:00,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:59:00,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:59:00,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:58:48" (1/3) ... [2018-11-07 20:59:00,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bcbb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:00, skipping insertion in model container [2018-11-07 20:59:00,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:58:50" (2/3) ... [2018-11-07 20:59:00,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bcbb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:00, skipping insertion in model container [2018-11-07 20:59:00,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:00" (3/3) ... [2018-11-07 20:59:00,997 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label02_true-unreach-call.c [2018-11-07 20:59:01,008 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:59:01,020 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:59:01,037 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:59:01,083 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:59:01,083 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:59:01,083 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:59:01,083 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:59:01,083 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:59:01,084 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:59:01,084 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:59:01,084 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:59:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 20:59:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 20:59:01,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:01,139 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] [2018-11-07 20:59:01,142 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:01,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:01,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1150781316, now seen corresponding path program 1 times [2018-11-07 20:59:01,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:01,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:01,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:01,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:01,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:01,752 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 20:59:01,814 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 20:59:01,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:59:01,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:59:01,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:01,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:59:01,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:59:01,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:59:01,884 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 20:59:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:10,882 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 20:59:10,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:59:10,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 20:59:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:10,919 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 20:59:10,919 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 20:59:10,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:59:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 20:59:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 20:59:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 20:59:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 20:59:11,122 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 60 [2018-11-07 20:59:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:11,123 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 20:59:11,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:59:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 20:59:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 20:59:11,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:11,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:11,134 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:11,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:11,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1301087830, now seen corresponding path program 1 times [2018-11-07 20:59:11,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:11,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:11,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:11,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:11,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:59:11,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:59:11,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:59:11,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:11,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:59:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:59:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:59:11,566 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 20:59:23,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:23,363 INFO L93 Difference]: Finished difference Result 5787 states and 10670 transitions. [2018-11-07 20:59:23,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:59:23,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 20:59:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:23,399 INFO L225 Difference]: With dead ends: 5787 [2018-11-07 20:59:23,399 INFO L226 Difference]: Without dead ends: 4268 [2018-11-07 20:59:23,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:59:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2018-11-07 20:59:23,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4242. [2018-11-07 20:59:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4242 states. [2018-11-07 20:59:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 6348 transitions. [2018-11-07 20:59:23,556 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 6348 transitions. Word has length 139 [2018-11-07 20:59:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:23,557 INFO L480 AbstractCegarLoop]: Abstraction has 4242 states and 6348 transitions. [2018-11-07 20:59:23,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:59:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 6348 transitions. [2018-11-07 20:59:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 20:59:23,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:23,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:23,564 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:23,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:23,565 INFO L82 PathProgramCache]: Analyzing trace with hash 587930970, now seen corresponding path program 1 times [2018-11-07 20:59:23,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:23,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:23,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:23,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:23,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:59:23,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:59:23,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:59:23,833 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:23,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:59:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:59:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:59:23,835 INFO L87 Difference]: Start difference. First operand 4242 states and 6348 transitions. Second operand 6 states. [2018-11-07 20:59:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:28,910 INFO L93 Difference]: Finished difference Result 12259 states and 20017 transitions. [2018-11-07 20:59:28,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:59:28,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 20:59:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:28,967 INFO L225 Difference]: With dead ends: 12259 [2018-11-07 20:59:28,967 INFO L226 Difference]: Without dead ends: 8023 [2018-11-07 20:59:28,993 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 20:59:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2018-11-07 20:59:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7938. [2018-11-07 20:59:29,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7938 states. [2018-11-07 20:59:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7938 states to 7938 states and 11945 transitions. [2018-11-07 20:59:29,266 INFO L78 Accepts]: Start accepts. Automaton has 7938 states and 11945 transitions. Word has length 140 [2018-11-07 20:59:29,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:29,266 INFO L480 AbstractCegarLoop]: Abstraction has 7938 states and 11945 transitions. [2018-11-07 20:59:29,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:59:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7938 states and 11945 transitions. [2018-11-07 20:59:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 20:59:29,271 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:29,271 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, 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] [2018-11-07 20:59:29,272 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:29,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:29,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1560360268, now seen corresponding path program 1 times [2018-11-07 20:59:29,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:29,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:29,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:29,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:29,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 20:59:29,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:29,540 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:29,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-07 20:59:29,543 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 20:59:29,602 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:29,602 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:29,959 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:30,648 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:59:30,649 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:59:30,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:30,697 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:59:30,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:30,697 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:59:30,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:30,712 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:59:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:30,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:59:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:59:31,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:59:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:59:31,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:59:31,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 20:59:31,865 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:59:31,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:59:31,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:59:31,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:59:31,866 INFO L87 Difference]: Start difference. First operand 7938 states and 11945 transitions. Second operand 9 states. [2018-11-07 20:59:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:40,343 INFO L93 Difference]: Finished difference Result 19970 states and 30369 transitions. [2018-11-07 20:59:40,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 20:59:40,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2018-11-07 20:59:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:40,445 INFO L225 Difference]: With dead ends: 19970 [2018-11-07 20:59:40,445 INFO L226 Difference]: Without dead ends: 12013 [2018-11-07 20:59:40,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:59:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12013 states. [2018-11-07 20:59:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12013 to 11988. [2018-11-07 20:59:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11988 states. [2018-11-07 20:59:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11988 states to 11988 states and 15430 transitions. [2018-11-07 20:59:40,872 INFO L78 Accepts]: Start accepts. Automaton has 11988 states and 15430 transitions. Word has length 214 [2018-11-07 20:59:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:40,873 INFO L480 AbstractCegarLoop]: Abstraction has 11988 states and 15430 transitions. [2018-11-07 20:59:40,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:59:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11988 states and 15430 transitions. [2018-11-07 20:59:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-07 20:59:40,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:40,883 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, 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] [2018-11-07 20:59:40,883 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:40,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 331270812, now seen corresponding path program 1 times [2018-11-07 20:59:40,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:40,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:40,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:40,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:40,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:41,256 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 117 proven. 61 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 20:59:41,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:41,580 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:41,580 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-11-07 20:59:41,581 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 20:59:41,586 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:41,586 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:41,684 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:42,772 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:59:42,773 INFO L272 AbstractInterpreter]: Visited 97 different actions 378 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 20:59:42,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:42,811 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:59:42,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:42,811 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:59:42,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:42,824 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:59:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:42,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:59:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 20:59:43,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:59:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 20:59:43,313 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:43,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 20:59:43,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:43,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:59:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:59:43,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:59:43,315 INFO L87 Difference]: Start difference. First operand 11988 states and 15430 transitions. Second operand 3 states. [2018-11-07 20:59:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:46,026 INFO L93 Difference]: Finished difference Result 23970 states and 30854 transitions. [2018-11-07 20:59:46,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:59:46,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-11-07 20:59:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:46,081 INFO L225 Difference]: With dead ends: 23970 [2018-11-07 20:59:46,081 INFO L226 Difference]: Without dead ends: 11988 [2018-11-07 20:59:46,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 454 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:59:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2018-11-07 20:59:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 11988. [2018-11-07 20:59:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11988 states. [2018-11-07 20:59:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11988 states to 11988 states and 14823 transitions. [2018-11-07 20:59:46,401 INFO L78 Accepts]: Start accepts. Automaton has 11988 states and 14823 transitions. Word has length 227 [2018-11-07 20:59:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:46,402 INFO L480 AbstractCegarLoop]: Abstraction has 11988 states and 14823 transitions. [2018-11-07 20:59:46,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:59:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11988 states and 14823 transitions. [2018-11-07 20:59:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-07 20:59:46,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:46,412 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:46,413 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:46,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1376012018, now seen corresponding path program 1 times [2018-11-07 20:59:46,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:46,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:46,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:46,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:46,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 20:59:47,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:47,013 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:47,013 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 305 with the following transitions: [2018-11-07 20:59:47,014 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 20:59:47,018 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:47,018 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:47,109 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:48,896 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:59:48,897 INFO L272 AbstractInterpreter]: Visited 98 different actions 675 times. Merged at 8 different actions 58 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 20:59:48,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:48,935 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:59:48,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:48,935 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:59:48,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:48,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:59:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:49,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:59:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 20:59:49,237 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:59:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 20:59:50,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:59:50,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 20:59:50,346 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:59:50,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:59:50,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:59:50,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:59:50,348 INFO L87 Difference]: Start difference. First operand 11988 states and 14823 transitions. Second operand 7 states. [2018-11-07 20:59:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:57,781 INFO L93 Difference]: Finished difference Result 35187 states and 44222 transitions. [2018-11-07 20:59:57,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:59:57,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-11-07 20:59:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:57,865 INFO L225 Difference]: With dead ends: 35187 [2018-11-07 20:59:57,865 INFO L226 Difference]: Without dead ends: 23161 [2018-11-07 20:59:57,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 611 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:59:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23161 states. [2018-11-07 20:59:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23161 to 21863. [2018-11-07 20:59:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21863 states. [2018-11-07 20:59:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21863 states to 21863 states and 26229 transitions. [2018-11-07 20:59:58,379 INFO L78 Accepts]: Start accepts. Automaton has 21863 states and 26229 transitions. Word has length 304 [2018-11-07 20:59:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:58,380 INFO L480 AbstractCegarLoop]: Abstraction has 21863 states and 26229 transitions. [2018-11-07 20:59:58,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:59:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 21863 states and 26229 transitions. [2018-11-07 20:59:58,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-07 20:59:58,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:58,398 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:59:58,399 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:58,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:58,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1730216867, now seen corresponding path program 1 times [2018-11-07 20:59:58,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:58,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:58,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:58,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:58,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 169 proven. 146 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 20:59:59,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:59,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:59,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-11-07 20:59:59,114 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [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], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1443], [1448], [1450], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 20:59:59,121 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:59,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:59,186 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:00,904 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:00:00,904 INFO L272 AbstractInterpreter]: Visited 135 different actions 796 times. Merged at 8 different actions 47 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:00:00,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:00,943 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:00:00,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:00,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:00:00,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:00,956 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:00:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:01,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:00:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-11-07 21:00:01,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:00:02,443 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-11-07 21:00:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 169 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:00:03,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:00:03,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2018-11-07 21:00:03,045 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:00:03,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 21:00:03,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 21:00:03,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-07 21:00:03,047 INFO L87 Difference]: Start difference. First operand 21863 states and 26229 transitions. Second operand 10 states. [2018-11-07 21:00:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:15,856 INFO L93 Difference]: Finished difference Result 71706 states and 89877 transitions. [2018-11-07 21:00:15,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 21:00:15,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 350 [2018-11-07 21:00:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:16,044 INFO L225 Difference]: With dead ends: 71706 [2018-11-07 21:00:16,045 INFO L226 Difference]: Without dead ends: 47258 [2018-11-07 21:00:16,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 706 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2018-11-07 21:00:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47258 states. [2018-11-07 21:00:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47258 to 41062. [2018-11-07 21:00:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41062 states. [2018-11-07 21:00:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41062 states to 41062 states and 50518 transitions. [2018-11-07 21:00:17,025 INFO L78 Accepts]: Start accepts. Automaton has 41062 states and 50518 transitions. Word has length 350 [2018-11-07 21:00:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:17,025 INFO L480 AbstractCegarLoop]: Abstraction has 41062 states and 50518 transitions. [2018-11-07 21:00:17,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 21:00:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 41062 states and 50518 transitions. [2018-11-07 21:00:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-11-07 21:00:17,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:17,057 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 21:00:17,058 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:17,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:17,058 INFO L82 PathProgramCache]: Analyzing trace with hash -415218559, now seen corresponding path program 1 times [2018-11-07 21:00:17,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:17,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:17,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:17,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:17,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-07 21:00:17,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:00:17,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:00:17,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:17,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:00:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:00:17,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:00:17,546 INFO L87 Difference]: Start difference. First operand 41062 states and 50518 transitions. Second operand 4 states. [2018-11-07 21:00:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:23,213 INFO L93 Difference]: Finished difference Result 107859 states and 136808 transitions. [2018-11-07 21:00:23,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:00:23,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2018-11-07 21:00:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:23,460 INFO L225 Difference]: With dead ends: 107859 [2018-11-07 21:00:23,460 INFO L226 Difference]: Without dead ends: 66295 [2018-11-07 21:00:23,598 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 21:00:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66295 states. [2018-11-07 21:00:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66295 to 65813. [2018-11-07 21:00:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65813 states. [2018-11-07 21:00:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65813 states to 65813 states and 82621 transitions. [2018-11-07 21:00:25,118 INFO L78 Accepts]: Start accepts. Automaton has 65813 states and 82621 transitions. Word has length 387 [2018-11-07 21:00:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:25,119 INFO L480 AbstractCegarLoop]: Abstraction has 65813 states and 82621 transitions. [2018-11-07 21:00:25,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:00:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 65813 states and 82621 transitions. [2018-11-07 21:00:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-11-07 21:00:25,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:25,151 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:25,151 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:25,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:25,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2108854852, now seen corresponding path program 1 times [2018-11-07 21:00:25,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:25,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:25,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:25,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:25,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:26,127 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 21:00:26,335 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 21:00:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 167 proven. 229 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:00:27,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:27,589 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:00:27,589 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 401 with the following transitions: [2018-11-07 21:00:27,590 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [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], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1725], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:00:27,593 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:00:27,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:00:27,664 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:28,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:00:28,738 INFO L272 AbstractInterpreter]: Visited 183 different actions 722 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:00:28,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:28,776 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:00:29,531 INFO L227 lantSequenceWeakener]: Weakened 396 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 21:00:29,531 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:00:29,694 INFO L415 sIntCurrentIteration]: We unified 399 AI predicates to 399 [2018-11-07 21:00:29,694 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:00:29,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:00:29,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2018-11-07 21:00:29,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:29,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 21:00:29,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 21:00:29,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-07 21:00:29,697 INFO L87 Difference]: Start difference. First operand 65813 states and 82621 transitions. Second operand 12 states. [2018-11-07 21:01:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:17,965 INFO L93 Difference]: Finished difference Result 159453 states and 198570 transitions. [2018-11-07 21:01:17,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 21:01:17,965 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 400 [2018-11-07 21:01:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:18,284 INFO L225 Difference]: With dead ends: 159453 [2018-11-07 21:01:18,285 INFO L226 Difference]: Without dead ends: 93212 [2018-11-07 21:01:18,438 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 413 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2018-11-07 21:01:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93212 states. [2018-11-07 21:01:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93212 to 89374. [2018-11-07 21:01:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89374 states. [2018-11-07 21:01:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89374 states to 89374 states and 110231 transitions. [2018-11-07 21:01:20,261 INFO L78 Accepts]: Start accepts. Automaton has 89374 states and 110231 transitions. Word has length 400 [2018-11-07 21:01:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:20,262 INFO L480 AbstractCegarLoop]: Abstraction has 89374 states and 110231 transitions. [2018-11-07 21:01:20,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 21:01:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 89374 states and 110231 transitions. [2018-11-07 21:01:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-11-07 21:01:20,308 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:20,309 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:20,309 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:20,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1029585849, now seen corresponding path program 1 times [2018-11-07 21:01:20,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:20,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:20,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:20,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:20,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:21,120 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 8 [2018-11-07 21:01:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 21:01:32,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:32,319 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:32,320 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 437 with the following transitions: [2018-11-07 21:01:32,320 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1360], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1778], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:32,324 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:32,325 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:32,376 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:33,864 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:33,864 INFO L272 AbstractInterpreter]: Visited 194 different actions 1156 times. Merged at 8 different actions 50 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:01:33,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:33,873 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:33,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:33,873 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:33,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:33,882 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:34,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:01:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 21:01:34,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:01:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 21:01:34,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:01:34,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-11-07 21:01:34,803 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:01:34,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 21:01:34,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 21:01:34,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 21:01:34,804 INFO L87 Difference]: Start difference. First operand 89374 states and 110231 transitions. Second operand 9 states. [2018-11-07 21:01:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:48,144 INFO L93 Difference]: Finished difference Result 226298 states and 298794 transitions. [2018-11-07 21:01:48,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 21:01:48,145 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 436 [2018-11-07 21:01:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:48,669 INFO L225 Difference]: With dead ends: 226298 [2018-11-07 21:01:48,669 INFO L226 Difference]: Without dead ends: 114238 [2018-11-07 21:01:49,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 878 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2018-11-07 21:01:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114238 states. [2018-11-07 21:01:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114238 to 100584. [2018-11-07 21:01:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100584 states. [2018-11-07 21:01:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100584 states to 100584 states and 120241 transitions. [2018-11-07 21:01:51,404 INFO L78 Accepts]: Start accepts. Automaton has 100584 states and 120241 transitions. Word has length 436 [2018-11-07 21:01:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:51,405 INFO L480 AbstractCegarLoop]: Abstraction has 100584 states and 120241 transitions. [2018-11-07 21:01:51,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 21:01:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 100584 states and 120241 transitions. [2018-11-07 21:01:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-11-07 21:01:51,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:51,470 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:01:51,471 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:51,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1869935361, now seen corresponding path program 1 times [2018-11-07 21:01:51,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:51,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:51,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:51,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:51,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:52,597 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 21:01:53,248 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 21:01:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 30 proven. 645 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-07 21:01:54,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:54,282 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:54,282 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 488 with the following transitions: [2018-11-07 21:01:54,282 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], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1725], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:54,285 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:54,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:54,335 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:56,678 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:56,679 INFO L272 AbstractInterpreter]: Visited 186 different actions 1476 times. Merged at 9 different actions 75 times. Widened at 1 different actions 3 times. Found 20 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:01:56,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:56,689 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:56,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:56,689 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:56,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:56,700 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:56,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:02:03,328 WARN L179 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2018-11-07 21:02:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 92 proven. 533 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-07 21:02:06,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:02:08,810 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-11-07 21:02:08,960 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-11-07 21:02:09,172 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 21:02:09,382 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 36 Received shutdown request... [2018-11-07 21:02:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 545 proven. 76 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:02:10,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:02:10,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 10] total 44 [2018-11-07 21:02:10,814 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:02:10,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-07 21:02:10,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-07 21:02:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1593, Unknown=4, NotChecked=0, Total=1892 [2018-11-07 21:02:10,817 INFO L87 Difference]: Start difference. First operand 100584 states and 120241 transitions. Second operand 37 states. [2018-11-07 21:02:10,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 21:02:10,818 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:02:10,825 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:02:10,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:02:10 BoogieIcfgContainer [2018-11-07 21:02:10,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:02:10,826 INFO L168 Benchmark]: Toolchain (without parser) took 202386.29 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 21:02:10,827 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 21:02:10,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1614.07 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 21:02:10,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 277.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -968.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:02:10,829 INFO L168 Benchmark]: Boogie Preprocessor took 181.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 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 21:02:10,830 INFO L168 Benchmark]: RCFGBuilder took 10471.66 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: 454.3 MB). Peak memory consumption was 454.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:02:10,830 INFO L168 Benchmark]: TraceAbstraction took 189835.38 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.5 GB). Free memory was 1.8 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 21:02:10,835 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 1614.07 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 277.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -968.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 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 10471.66 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: 454.3 MB). Peak memory consumption was 454.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189835.38 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.5 GB). Free memory was 1.8 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 167]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 167). Cancelled while BasicCegarLoop was constructing difference of abstraction (100584states) and FLOYD_HOARE automaton (currently 2 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 189.7s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 127.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3088 SDtfs, 24577 SDslu, 3556 SDs, 0 SdLazy, 44121 SolverSat, 9865 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 4613 GetRequests, 4431 SyntacticMatches, 20 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100584occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.2s AbstIntTime, 7 AbstIntIterations, 1 AbstIntStrong, 0.9976825415694326 AbsIntWeakeningRatio, 0.08270676691729323 AbsIntAvgWeakeningVarsNumRemoved, 21.949874686716793 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 25631 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.5s InterpolantComputationTime, 5162 NumberOfCodeBlocks, 5162 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7157 ConstructedInterpolants, 346 QuantifiedInterpolants, 21604829 SizeOfPredicates, 20 NumberOfNonLiveVariables, 3363 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 5921/7861 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown